Category Archives: Security Websies

Bitcoin Payment Processor BIPS under DDoS Attack, Over $1m Stolen

Europe’s primary bitcoin payment processor for merchants and free online wallet service, BIPS, was the target of a major DDoS attack and subsequent theft in the past few days that saw 1,295 BTC (just over $1m on CoinDesk’s BPI) stolen. Kris Henriksen, BIPS’ CEO, said most of the missing funds were “from the company’s own holdings”. BIPS uses an algorithm, based on supply and demand, to work out the amount of bitcoins it needs to keep it in a ‘hot wallet’. The heist, however, was apparently not due to any vulnerability in the code itself. He also said merchants who had chosen to instantly convert their bitcoin to fiat currency bank accounts were not affected. Theft The Copenhagen, Denmark-based company was targeted on 15th November by a massive DDoS attack. Then on 17th November, it was followed up by a subsequent attack that disabled the site and “overloaded our managed switches and disconnected the iSCSI connection to the SAN on BIPS servers”. “Regrettably, despite several layers of protection, the attack caused vulnerability to the system, which has then enabled the attacker/s to gain access and compromise several wallets,” the company said in a written statement. BIPS believes the two attacks were connected, and at least the initial DDoS attack was “found to originate from Russia and neighboring countries”. The company moved fast to restore full merchant payment and transfer services by 19th November, but disabled all wallet functions in order to complete a full forensic analysis. Its help desk also went down for a few days, but was restored on 22nd November. Investigation Under BIPS’ privacy policy, it is not allowed to disclose users’ information to anyone, even the authorities. They will now set up a system for affected wallet users to voluntarily sign the required permission documents, to engage in a more thorough investigation with law enforcement to track down the culprits. Henriksen stressed that merchant processing “was restored very quickly, and if you had auto-convert on, there is nothing to worry about”. BIPS’ official statement on its site read: To protect the successful merchant processing business, BIPS has decided to temporarily close down its consumer wallet initiative. BIPS has been a target of a coordinated attack and subsequent security breached. Several consumer wallets have been compromised and BIPS will be contacting the affected users. As a consequence BIPS will temporarily close down the wallet initiative to focus on real-time merchant processing business which does not include storing of bitcoins. Subsequently BIPS will consider to reintroduce the wallet initiative with a re-architected security model. The consumer wallet initiative has not been BIPS’ core business and, as such, regrettably affecting several users has not affected BIPS merchant acquiring. All existing users will be asked to transfer bitcoins to other wallet solutions, and users affected by the security breach will be contacted. Restoration of merchant services did little to comfort individual wallet owners, though. On the Bitcoin Talk forum, several users voiced anger at the prospect of losing their funds, and what they saw as unclear statements from BIPS about exactly what had been stolen, from whom, and how much. One member even created a ‘bips.me potential lawsuit signup form’ for users to input their contact details and number of bitcoins missing, in an effort to prompt a negotiated solution. Though the attack and theft highlights problems that some online wallet services have faced with security, it is significant given BIPS’ comparatively large user base and prominence in the market. As well as online accounts, BIPS had also offered a paper wallet function for those wishing for a safer long-term storage solution. Source: http://www.coindesk.com/bitcoin-payment-processor-bips-attacked-1m-stolen/

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Bitcoin Payment Processor BIPS under DDoS Attack, Over $1m Stolen

Bitstamp Suffers Banking Software Issue and DDoS Attack

Bitstamp’s website has been experiencing a number of difficulties over the past couple of days. Yesterday, the Slovenia-based company experienced problems with the banking software it uses. A statement on the company’s blog and Facebook page reads: Dear Bitstamp clients, We are currently experiencing some problems with our banking software. As a result, deposits and withdrawals may be delayed. We expect this issue to be solved be resolved tomorrow or the next day. We kindly ask our customers with pending transfers to remain patient and refrain from submitting additional support tickets on the matter. We will announce as soon as this issue gets resolved. Thank you for your understanding. Best regards, The Bitstamp team With a tweet 19 hours ago stating: Bitstamp CEO Nejc Kodri? said the issue related to the company’s transaction log: “We were missing bank transaction log from Friday. Also sending transfers out was disrupted, but it now works.” This afternoon, the site suffered a DDoS attack. The last time CoinDesk was successfully able to access price data from Bitstamp was 14:05 (GMT). The site is still experiencing problems. Kodri? said his team is “still working on this” issue. Kodri? said the site hasn’t experienced any difficulties because of increased user traffic over the past couple of days, during which the bitcoin price has increased sharply. In fact, the entrepreneur said the site experienced a record number of visits yesterday with no problems. Source: http://www.coindesk.com/bitstamp-suffers-banking-software-issue-ddos-attack/

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Bitstamp Suffers Banking Software Issue and DDoS Attack

New Zealand Couriers struck down by DDoS attack

The New Zealand Couriers website was the victim of a ‘denial of service’ botnet attack late last week, believed to be from overseas. The ‘denial of service’ attack, which took place on Thursday November 7, was specifically aimed at preventing access to www.nzcouriers.co.nz and the online tools hosted on this page, and required intensive and malicious effort by an unknown group. Revealed through a customer email sent out by the company, NZ Couriers wrote: “We have sorted out the issues caused by this attack for the most part. “But there are some important pieces of information we wanted to make you aware of: • You may experience a longer wait time than usual when contacting our call centre, due to more people doing things over the phone that they would usually do through our website. We would encourage you in the first instance to try using our online tools as usual before calling through to book a courier, buy product, or track an item. • The issue was caused by a malicious attack, but no one who visits our website is at any sort of risk – this is not related to viruses or anything along those lines. • Traffic to www.nzcouriers.co.nz has been restricted to New Zealand and Australian based companies – so if you have a customer outside of this region, or if your company runs an offshore system then they may not be able to access this website. If this occurs, we do have a way to resolve this – simply contact us on 0800 800 841 and we’ll get the details from you required to sort this out. Admitting that there may be “some lingering issues over the next few days,” NZ Couriers claims these are likely to be sorted out within the next week. “New Zealand Couriers apologises for this interruption of service and we will continue to do everything in our power to deliver the same great service you have come to expect from us,” the company email concluded. Source: http://techday.com/netguide/news/nz-couriers-struck-down-by-dos-attack/173381/

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New Zealand Couriers struck down by DDoS attack

Tracking botnets using automatically generated domains

Stefano Zanero is an Assistant Professor at Politechnico di Milano, where he focuses on systems security. Modern botnets rely on domain-generation algorithms (DGAs) to build resilient command-and-c…

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Tracking botnets using automatically generated domains

Yet ANOTHER IE 0-day hole found: Malware-flingers already using it for drive-by badness

You read that right: OPT OUT of a botnet by hitting Ctrl+Alt+Del Security researchers have discovered new zero-day vulnerabilities in Internet Explorer that are already being harnessed by hackers to run a new type of drive-by attack.…

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Yet ANOTHER IE 0-day hole found: Malware-flingers already using it for drive-by badness

Decoding the cyber attacks – DDoS against Singapore Government

Hacktivism arrived in Singapore 10 days ago in the form of “the Messiah”, who claimed to be a member of global cyber activism group Anonymous. He threatened to unleash a legion of hackers on the country and its infrastructure if the Government did not revoke its licensing regime for news websites. Should Singaporeans be afraid? ON OCT 29, as ordinary Singaporeans went about their Tuesday, political protest took an unexpected turn. This day marked the arrival of the hacktivist in Singapore – a new breed of protester who hacks into online sites to make a point. And that day, the Singapore Government was his declared target. In a blurry YouTube video, a masked man threatened chaos on the country and its infrastructure if the licensing regime for news websites, instituted in June, was not lifted. Identifying himself as a part of cyber activism group Anonymous, he declared: “For every single time you deprive a citizen his right to information, we will cost you financial loss by aggressive cyber-intrusion.” What preceded and followed the video message were defacements of several websites, from that of the Ang Mo Kio Town Council to The Straits Times ’ blog section, by a hacker calling himself “the Messiah”. Last Saturday, when several government websites went down for several hours, some Singaporeans wondered if it was the start of the threatened chaos. Communications consultant Priscilla Wong, 36, says: “My first thought was, could this be ‘the Messiah’ carrying out his threats?” But the Infocomm Development Authority (IDA) of Singapore, the local sector regulator, told the media that it was not a case of hacking, but of scheduled maintenance that took longer than expected due to technical glitches. Then, on Wednesday, Prime Minister Lee Hsien Loong said that the authorities would spare no effort in finding the hackers, and that they would be dealt with severely. Two days later, a page on both the Prime Minister’s Office (PMO) and the Istana websites were hacked in retaliation. This move took the hostilities to a new level, say observers. “If you presume it’s the same guy or the same group, then this shows escalating tensions,” says PAP MP Zaqy Mohamad, who chairs the Government Parliamentary Committee on Information and Communications. “I suppose they took PM’s words as a challenge, and to some extent, it showed their confidence and brazenness.” How significant is this emergence of local hacktivism, and what are the ramifications? What happened? While the website defacement left many wondering if the leaking of classified personal information was just a string of codes away, cyber experts say there is a gulf between the technical skills required for the two acts, and that the two activities tend to be carried out by different groups for different purposes. Website defacements are generally considered “low-level” hacking jobs, says Paul Ducklin, a consultant at security software firm Sophos. The next level up is DDoS attacks, short for Distributed Denial of Service. In DDoS attacks, the attacker creates a network using thousands of infected computers worldwide, which are then made to overwhelm a targeted site with a huge spike in traffic. The IDA revealed on Friday that there was an unusually high level of traffic to many government websites on Nov 5, the day of the Messiah’s threatened attack, and that these indicated either attempts to scan for vulnerabilities or potential DDoS attempts. While such attacks may cause inconveniences by slowing down website access for users, they do not usually result in a loss of data or information. In the case of the PMO and Istana Web pages, the hackers exploited a vulnerability known as “cross-site scripting”, which resides in an unpatched Google search bar embedded in a Web page on each of the two government websites. Users had to type a specially crafted string of alpha-numeric search terms – understood to have been circulated on online forums – in the Google search bar before an image resembling a defaced page came on screen. IDA assistant chief executive James Kang stressed that the integrity and operations of both sites were not affected. “Data was not compromised, the site was not down and users were not affected,” he said. The most severe attacks, those resulting in personal information theft, are usually carried out in stealth by organised crime groups for financial gain, say experts. They use computer programs such as keylogging software to harvest passwords and banking account details. Foreign academics studying the Anonymous group note that the hacktivists do not have the financial wherewithal, nor desire, to perpetrate this level of cyber crime. An expert on the Anonymous collective, Gabriella Coleman of Canada’s McGill University, wrote in a recent academic paper: “It has neither the steady income nor the fiscal sponsorship to support a dedicated team tasked with recruiting individuals, coordinating activities and developing sophisticated software.” The Messiah’s actions so far seem consistent with Anonymous’ modus operandi of symbolic protest instead of real damage. “The attacks so far were mainly targeted at government-linked organisations with the purpose of creating attention, rather than causing direct damage,” says Alvin Tan, director for anti-virus software company McAfee Singapore and the Philippines. The Internet Society’s Singapore chapter president Harish Pillay emphasises that the websites that have been defaced by “the Messiah” are not high-security ones. There is no reason to link the hacking of such websites to intrusion into classified government databases, he says. “That’s like saying that since a shophouse next to Parliament House got burgled, then Parliament House is in danger of being burgled. The two are not the same.” Still, the threats have made an impact. Last Saturday, the IDA took down some of the gov.sg websites for maintenance in an attempt to patch vulnerabilities. A combination of Internet routing issues and hardware failures caused a glitch, which took the websites offline longer than expected that day, IDA said. Plugging weaknesses On Wednesday, PM Lee confirmed that the Government was beefing up its systems but cautioned that it was not possible to be “100% waterproof”, as IT systems are complicated and “somewhere or other, there will be some weakness which could be exploited”. In the wake of the hacking of the PMO and Istana pages, the IDA said that it is continuing to strengthen all government websites. This includes the checking and fixing of vulnerabilities and software patching. But bringing cyber security here up to a level that could deter elite “crackers” – the term for ill-intentioned hackers – will be challenging, say experts. A major obstacle is the lack of security experts not just in Singapore but also worldwide. Singaporean Freddy Tan, chairman of the International Information Systems Security Certification Consortium – or (ISC)2, estimates the shortfall of infocomm security staff in Singapore to be at least 400. (ISC)2 is the world’s largest not-for-profit body that educates and certifies IT security professionals. Specifically, there is a severe shortage of security analysts and digital forensics workers who monitor Internet traffic patterns, says Tan. Value of cyber protest “The Messiah” and his colleagues have heralded a new age of digital protest here. But observers are split on whether it is a valuable form of social and political activism. “It gets people to sit up and ask, what’s going on here?” notes Pillay. When it comes to the issues, the Messiah and his colleagues seem to be interested in a gamut of them. Experts say the overall agenda seems to concern equality, looking out for the underdog and a call for transparency. The lynchpin demand, made in the YouTube video on Oct 29, was directed at the Government’s licensing regime for news websites. The regulations require selected news sites with at least 50,000 unique visitors from Singapore each month over a period of two months to post a S$50,000 (RM130,000) bond and take down content against public interest or national harmony within 24 hours. It is opposed by some for what they perceive as its intent to suppress online free speech, and a group of bloggers has mounted a “Free My Internet” campaign against it. But the group has distanced itself from “the Messiah”, and among prominent online commentators a rift has emerged over whether to denounce the hacking or accept it as another form of social and political activism that could effect change in its own way. The hackers’ threats spurred some Netizens to reject this method of seeking to change policies, arguing that it amounted to one group seeking to impose its views on others rather than arguing its case. The Online Citizen, for example, said it did not condone Anonymous’ tactics, saying it did not condone “intentional violations of the law which are calculated to sabotage and disrupt Internet services which innocent third parties rely on for data”. Some have likened hacking to the civil disobedience practised by Singapore Democratic Party chief Chee Soon Juan in the 1990s, when he argued that it was just to disobey an unjust law. But if “the Messiah” wanted to add his heft to the campaign against the website licensing regime, observers were confused by his timing. After all, it was announced in June, and the outcry and public protests against it took place later that month. “Hacking Singapore sites for a law that was passed half a year ago is like laughing at a joke after everyone has left the party,” notes Professor Ang Peng Hwa, director at the Singapore Internet Research Centre. If and when the hackers are identified, the Singapore authorities are likely to bring a gamut of laws down to bear on them, say local lawyers. “At least three of Singapore’s broad laws might be invoked,” says lawyer Gilbert Leong, partner at Rodyk & Davidson. The first is the new Computer Misuse and Cybersecurity Act, passed in Parliament in January. It was called the Computer Misuse Act before but was amended to allow the Minister for Home Affairs to order a person or organisation to act against any cyber attack even before it has begun. For instance, telcos might have already been roped in to track the hacker. The second is the Criminal Law (Temporary Provisions) Act, which may be used against those who publish subversive materials that compromise public order. The third law is the Sedition Act, for exciting disaffection against the Government. Facing charges Whoever was behind the YouTube video could also face charges under the Internal Security Act for threatening the security of the Internet, says lawyer Bryan Tan, a partner in Pinsent Masons MPillay. If caught and proven guilty, “the Messiah” could face hefty fines and years in prison for his hacktivism. Law enforcers’ jobs would be made harder if “the Messiah” and his colleagues do not reside in Singapore. However, another law – the United Nations (Anti-Terrorism) Measures Regulations – might be used to extradite the offender to Singapore. This law might be used as “the Messiah” had threatened to attack Singapore’s infrastructure, which could be deemed by the authorities as a terrorist act. Whatever comes of “the Messiah” and Anonymous’ arrival in Singapore, hacktivism looks to be a new fact of life in an inter-connected, politicised society. It is however a tactic that many activists online have been quick to reject and Singaporeans on the whole have shown little interest in supporting. — The Straits Times/ANN Source: http://www.thestar.com.my/News/Regional/2013/11/10/Decoding-the-cyber-attacks.aspx

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Decoding the cyber attacks – DDoS against Singapore Government

Denial of Service (DDoS) Cyber attacks – are they using the same logic as terror threats?

Much has been discussed about the damage that the Advanced Persistent Threat (APT) attacks cause to corporates and governments alike. It is estimate that at least 50% of Fortune 500 companies have been compromised by APT, and the potential financial damage to these organizations is almost impossible to quantify, but probably in the trillions of US dollars. Compared to this a crude Denial of Service (DoS) attack or its more advance siblings, the Distributed Denial of Service (DDoS) attacks and Distributed Reflector (DRDoS) attacks, their outcome seems pretty benign- your site is being bombarded by thousands of request for information, until the server gives up and no-one can actually use the site. Once the attack stops, access is possible again and no damage to your IT infrastructure has occurred, no data or money was stolen and hopefully your angry customer will believe it was just a “site malfunction”. But as attack methods have become more sophisticated AND more accessible (for example, now one can simply rent hundreds of BOT computer as a service, to carry the attack for him, using a simple interface, with no need to know how to actually hack), the industry had to act, and developed means to mitigate these attacks. Several methods of DDoS mitigation exist and multiple companies offer these as a service. Now a very dangerous equation begins to unfold, one where the attacker can use simple, cheap tools (a fairly typical rate for DDoS botnet rental hovers around the $200 for 10,000 bot agents per day), and the defender must invest much larger resources, both internal (maintaining a Security Operations Center or SOC) and external (service providers), creating an inherent asymmetry. This asymmetry means that organizations wishing to mitigate this threat will keep investing (or throwing, since there is no actual gain here, only minimizing the impact) money over time, until they are in serious economic pain. And this is exactly what Islamic terrorist have been trying to do in the recent global jihad campaign- making western countries bleed money in order to try and prevent sparse attacks carried by rudimentary means. As Osama bin Laden said: “It is very important to concentrate on hitting the American economy with every available tool … the economy is the base of its military power. The United States is a great economy but at the same time it is fragile.” The risk is that using offensive cyber means one can achieve this goal much faster (and one does not have to blow himself to pieces in the process, or hurt innocent people). Therefore, prevention and not only mitigation is necessary. Organizations must be far more proactive than they are now. Sure, investments in IT security and best practices are always a good idea, but also applying preventive intelligence to greatly reduce the impact of attacks. This, couples with harsher legislation and enforcement against both the suppliers and the perpetrators of the attacks will hopefully, in the end, balance this asymmetric equation. For protection against your eCommerce site click here . Source: http://defense-update.com/20131107_denial-service-ddos-cyber-attacks-using-logic-terror-threats.html

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Denial of Service (DDoS) Cyber attacks – are they using the same logic as terror threats?

Avoiding Website Outages During the Holiday Season

The holiday shopping season is practically upon us, and online retailers don’t want to endure any IT downtime between Thanksgiving and Christmas when many ring up a third of their annual receipts. That’s a lot of green. Online shopping carts should register nearly $100 billion this holiday season in online sales – up 12% from a year ago, estimates Shop.org. What can online retailers do to avoid outages and other disruptions? It’s an important issue because an estimated one-in-five retailers suffered outages last year. The damage? Forty-five% estimated they could lose $500,000 to $5 million in one day due to a website crash. Gartner consultants predict a 10% growth in the financial impact that cybercrime will have on online businesses through 2016. They see distributed denial-of-service (DDoS) attackers taking advantage of new software vulnerabilities to begin an assault with multiple sources and often multiple targets. These can be introduced via employee-owned devices used in the workplace and even via the Cloud. Actions to Take Now While it’s probably too late to take major actions this holiday season, retailers can still take some steps to minimize such disruptions. However, to really combat the outage and downtime challenges, retailers should begin taking more effective steps after the New Year starts to get ready for the 2014 holiday rush. Three-of-four online retailers (77%) strengthened their online IT defenses this year to reduce downtime from last year. Downtime certainly occurs. Considering the common 99.5% system uptime, this leaves 43 hours – roughly one-and-a-half days – of downtime yearly.  A key focus area should be ensuring your site can handle rapid and unexpected increases in demand. That demand can take two forms: desired demand, which should be scaled up Cyber Monday and undesired demand, which should be mitigated, like a cyberattack. Here’s what online retailers still can do before the approaching Big Season. Determine whether you can handle the increased traffic from desired demand expected during the holiday season, especially on Cyber Monday, when online sales soar. You might still be able to turn to cloud-based services to add capacity and prevent a site crash. But if you don’t have a cloud provider, it’s probably too late to make those arrangements and transfer your data to the provider’s site. Determine if you have adequate mitigation capabilities for DDoS attacks from hackers. The last quarter of the year, primarily holiday season, is when DDoS attacks increase in size and intensity. In the 2012 fourth quarter, one DDoS protection service mitigated attacks that reached more than 50 gigabits per second directed against ecommerce clients; the average attack duration was 32.2 hours. Find out how various types of DDoS threats can impact different elements of your network and determine mitigation actions that can protect them, including employing a DDoS mitigation service. Keep tabs on blogs and social media sites because hackers enjoy bragging about their activities and sometimes disclose their next industry target. Make sure your payment data being collected remains secure because attackers often are going after customer credit card data. For retailers about to begin or who have begun what’s called the “network freeze,” in which no changes of any type can be made to their network and system components or apps operations until mid-January to avoid triggering downtime, if any severe vulnerability that has the potential to cause downtime is found, an emergency change window should be requested to remediate the problem – even during the “freeze.” This “freeze” practice actually is a Payment Card Industry (PCI) regulation. But only 21%bof businesses that store credit and debit card data comply with that regulation in between their mandatory annual audits, a Verizon study finds. What to Do for Next Holiday Season When the holiday and post-holiday sales rush slows, begin thinking about the 2014 holiday season, especially if you’re really bent on enhancing your defenses and scalability against downtime or outages and you haven’t taken major steps yet. Here are some suggested initiatives: Confer with a consulting firm or a data center or cloud provider about what you need to do, specifically, to realize your objectives. Consider actually retaining a service provider that delivers services to help you scale out and protect your IT operations. Going to the cloud doesn’t alleviate your IT responsibility where security is involved. The cloud doesn’t necessarily make your apps secure. A service provider can work with developers to develop and meet these objectives. Shift to a scale-out IT model so your applications scale out, not up, and this may require application transformation efforts to make you application resilient even when infrastructure services are disrupted in local regions. Act early in the year because this type of transformation effort will require changes across all parts of your infrastructure and application; no real shortcut exists and there won’t be time to make these types of changes once the selling season is upon you. Embrace cloud-type platforms if you’re a seasonal online retailer because they’re more dynamic and it’s easy to scale up quickly to meet demand and not incur extra costs when the demand isn’t there. Look into establishing a hybrid cloud so those apps that can’t be moved to the cloud quite yet, can continue to be handled in their traditional manner. For instance, you might use the cloud for web and application tiers and keep other operations in your normal IT setup until you are ready to take on the transformation actives required to update your database environment. Be sure to test your enhanced system before the holiday season and design it to support 100% availability because your goal must strive to always be up. This means securing secondary and tertiary facilities and resources far apart from your principal facility so if an outage occurs in one site, the load can be automatically shifted to an alternate site. Lastly, understand your key performance indicators, or KPIs – those measurements used to evaluate the success of particular activities in which you’re engaged. To do this well, you must possess a firm understanding of the KPIs across all tiers of your applications. Certainly for online retailers, the holiday selling season is critical to their financial strength and even survival. That’s why it’s imperative to keep your IT operations up and running and to recognize and repel cyber-attackers. But remember. You can’t do everything.  Simply do what you can for this year and move swiftly to prepare for the 2014 holiday season. Source: http://multichannelmerchant.com/crosschannel/avoiding-outages-holiday-season-06112013/

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Avoiding Website Outages During the Holiday Season

Jurassic DDoS?

Like something from the digital ice age, distributed denial-of-service (DDoS) attacks have thawed and are roaming the cyber planet again, according to data from Google in collaboration with Arbor Networks, which provides insight into the scale and geography of recent cyber strikes. Various other reports support the same theory. Verisign estimates that a third of downtime incidents stem from DDoS attacks. These attacks are costly for both businesses and consumers, and the costs are rising. The security firm Prolexic found that attacks became bigger and more frequent in 2013 vs. 2012. There was a 58% increase in total DDoS attacks; 101% increase in application layer (Layer 7) attacks; 48% increase in infrastructure (Layer 3 &4); and 12.4% increase in average attack duration. In addition to an increase in frequency and scale, Prolexic observed some interesting metrics that illustrate significant changes in DDoS attack methodologies. Most notably was a shift away from the bulky flat packet SYN floods to UDP-based attacks and the rapid adoption of Distributed Reflection Denial-of-Service (DrDoS) attacks. A “reflection attack” is a compromise of a server’s security caused by tricking it into giving up an authentication security code, allowing a hacker to access it. These attacks are made possible when servers use a simple protocol to authenticate visitors. It exploits a common security technique known as a challenge-response authentication, which relies on the exchange of secure information between authorized user and server. The hacker logs on and receives a challenge. The server is expecting an answer in the form of the correct response but instead, the hacker creates another connection and sends the challenge back to the server. In a weak protocol, the server will send back the answer, allowing the hacker to send the answer back along the original connection to access the server. Systems that use a challenge-response authentication approach to security can be vulnerable to reflection attacks unless they are modified to address the most common security holes. Reflection attacks use a different kind of bot and require a different type of server to spoof the target IP. Prolexic believes the adoption of DrDoS attacks is likely to continue, as fewer bots are required to generate a high volume of attack traffic due to reflection and amplification techniques. Such attacks also provide anonymity by spoofing IP addresses. Another interesting observation by Prolexic is that infrastructure-based attack protocols such as SYN floods remain in steady use and are often implemented in conjunction with the reflection attacks. The US and China are popular targets simply because these two countries have more internet users than any other country, and both countries are popular choices for ideologically based attacks. The top ten DDoS originating countries according to the Prolexic Quarterly Global DDoS Attack Report Q3 2013 are: China – 62% United States – 9.06% Republic of Korea – 7.09% Brazil – 4.46% Russia – 4.45% India – 3.45% Taiwan – 2.95% Poland – 2.23% Japan – 2.11% Italy – 1.94% So, what does the future hold for DDoS attacks? Future DDoS attacks will likely be conducted through the use of booter scripts, stressor services, and related Application Programming Interfaces (API). The increasing use of this attack method will result in much more effective attacks with fewer resources required. Since these attacks are easier to employ, DrDoS attacks will become more popular. In fact, according to Prolexic, script kiddies are graduating into digital crime and assembling DDoS-for-hire sites for as little as five dollars ($5). That $5 can buy you 600 seconds of DDoS and just $50 could put a credit union down for an afternoon. Remember, it costs far less to generate an attack than to mitigate an attack. Security professionals must promote cleanup efforts and make it difficult for hackers to send money to criminals offering DDoS for hire. The financial institutions with smaller security budgets become more lucrative targets because they cannot apply the resources to identify threats. Verizon’s Chris Novak agreed: “We are seeing where DDoS is used to distract a medium-size financial institution. While they are busy fighting off the DDoS, they don’t see that terabytes of data just walked out the door. That’s scary.” DDoS is not dead. In fact, it is alive and kicking. In addition to the foray of targets, many new government programs have become recent hacker targets using DDoS. As new software is developed, it is incumbent on IT security professionals to be cognizant of potential DDoS vulnerabilities and to initiate countermeasures as quickly as possible. Source: http://www.infosecurity-magazine.com/blog/2013/11/5/jurassic-ddos/1050.aspx

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Jurassic DDoS?

Application-layer DDoS attacks are becoming increasingly sophisticated

The number of DDoS (distributed denial-of-service) attacks that target weak spots in Web applications in addition to network services has risen during the past year and attackers are using increasingly sophisticated methods to bypass defenses, according to DDoS mitigation experts. Researchers from Incapsula, a company that provides website security and DDoS protection services, recently mitigated a highly adaptive DDoS attack against one of its customers that went on for weeks and combined network-layer with application-layer—Layer 7—attack techniques. The target was a popular trading site that belongs to a prominent player in a highly competitive online industry and it was one of the most complex DDoS attacks Incapsula has ever had to deal with, the company’s researchers said in a blog post. The attack started soon after an ex-partner left the targeted company and the attackers appeared to have intimate knowledge of the weak spots in the target’s infrastructure, suggesting that the two events might be connected, the researchers said. The attack began with volumetric SYN floods designed to consume the target’s bandwidth. It then progressed with HTTP floods against resource intensive pages, against special AJAX objects that supported some of the site’s functions and against Incapsula’s own resources. The attackers then switched to using DDoS bots capable of storing session cookies in an attempt to bypass a mitigation technique that uses cookie tests to determine if requests come from real browsers. The ability to store cookies is usually a feature found in full-fledged browsers, not DDoS tools. As Incapsula kept blocking the different attack methods, the attackers kept adapting and eventually they started flooding the website with requests sent by real browsers running on malware-infected computers. “It looked like an abnormally high spike in human traffic,” the Incapsula researchers said. “Still, even if the volumes and behavioral patterns were all wrong, every test we performed showed that these were real human visitors.” This real-browser attack was being launched from 20,000 computers infected with a variant of the PushDo malware, Incapsula later discovered. However, when the attack first started, the company had to temporarily use a last-resort mitigation technique that involved serving CAPTCHA challenges to users who matched a particular configuration. The company learned that a PushDo variant capable of opening hidden browser instances on infected computers was behind the attack after a bug in the malware caused the rogue browser windows to be displayed on some computers. This led to users noticing Incapsula’s block pages in those browsers and reaching out to the company with questions. “This is the first time we’ve seen this technique used in a DDoS attack,” said Marc Gaffan, co-founder of Incapsula. The challenge with application-layer attacks is to distinguish human traffic from bot traffic, so DDoS mitigation providers often use browser fingerprinting techniques like cookie tests and JavaScript tests to determine if requests actually come from real browsers. Launching DDoS attacks from hidden, but real browser instances running on infected computers makes this type of detection very hard. “We’ve been seeing more and more usage of application-layer attacks during the last year,” Gaffan said, adding that evasion techniques are also adopted rapidly. “There’s an ecosystem behind cybercrime tools and we predict that this method, which is new today, will become mainstream several months down the road,” he said. DDoS experts from Arbor Networks, another DDoS mitigation vendor, agree that there has been a rise in both the number and sophistication of Layer 7 attacks. There have been some papers released this year about advanced Layer 7 attack techniques that can bypass DDoS mitigation capabilities and the bad guys are now catching on to them, said Marc Eisenbarth, manager of research for Arbor’s Security Engineering and Response Team. There’s general chatter among attackers about bypassing detection and they’re doing this by using headless browsers—browser toolkits that don’t have a user interface—or by opening hidden browser instances, Eisenbarth said. In addition, all malware that has man-in-the-browser functionality and is capable of injecting requests into existing browsing sessions can also be used for DDoS, he said. Layer 7 attacks have become more targeted in nature with attackers routinely performing reconnaissance to find the weak spots in the applications they plan to attack. These weak spots can be resource-intensive libraries or scripts that result in a lot of database queries. This behavior was observed during the attacks against U.S. banking websites a year ago when attackers decided to target the log-in services of those websites because they realized they could cause significant problems if users are prevented from logging in, Eisenbarth said. “We continued to see attackers launch those type of attacks and perform reconnaissance to find URLs that, when requested, may result in a lot of resource activity on the back end,” he said. More and more companies are putting together DDoS protection strategies, but they are more focused on network-layer attacks, Gaffan said. They look at things like redundancy or how much traffic their DDoS mitigation solution can take, but they should also consider whether they can resist application-layer attacks because these can be harder to defend against than volumetric attacks, he said. With application-layer attacks there’s an ongoing race between the bad guys coming up with evasion techniques and DDoS mitigation vendors or the targeted companies coming up with remedies until the next round, Gaffan said. Because of that, both companies and DDoS mitigation providers need to have a very dynamic strategy in place, he said. “I think we will continue to see an evolution in the sophistication of application-layer attacks and we will see more and more of them,” Gaffan said. They won’t replace network-layer attacks, but will be used in combination with them, he said. Having Layer 7 visibility is very important and companies should consider technologies that can provide that, Eisenbarth said. In addition to that, they should perform security audits and performance tests for their Web applications to see what kind of damage an attacker could do to them, he said. Source: http://www.pcworld.com/article/2056805/applicationlayer-ddos-attacks-are-becoming-increasingly-sophisticated.html

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Application-layer DDoS attacks are becoming increasingly sophisticated