Category Archives: DDoS Vendors

DDoS attacks getting bigger but shorter in duration

Distributed Denial of Service (DDoS) attacks are getting bigger, but their duration are getting shorter, according to an analysis released this week by Arbor Networks. During the first six months of 2013, the average size of DDoS attacks remained solidly over the 2Gbps, Arbor reported — something the company has never seen before. Although the average may have been skewed during the period by the massive attack on Spamhaus in March, which reached 300Gbps at its zenith, large attacks in general have been going up too, Arbor found. From January to June this year, it said attacks exceeding 20Gbps more than doubled over 2012. Several security experts agreed with Arbor’s analysis. Michael Smith, CSIRT director for Akamai Technologies, cited two factors affecting DDoS numbers during the period. “It’s just easier to do these days,” he said in an interview. “You can rent a botnet for $20.” He added that a hacktivist group known as the Izz ad-Dim al-Qassam Cyber Fighters (QCF) has adopted a strategy that is also driving up the raw number of attacks and depressing their duration. “They attack multiple targets during the course of a day,” Smith explained. Not only do they attack multiple sites, but they don’t prolong an attack if they don’t see immediate results. “They’ll move from target to target after 10 or 20 minutes until they find one they can cause an immediate impact on,” Smith noted. Attacks are becoming bigger because hackers have more resources to mount attacks than ever before, said Marc Gaffan, founder of Incapsula. “There’s more ammunition for hackers in the wild which is why attacks have grown in size,” he said. New techniques have also contributed to the size of the attacks. For example, in the Spamhaus attack, hackers exploited openings in DNS servers to amplify the magnitude of their attacks on the website. They do that by sending a request to a server with an open DNS resolver. In the request, they spoof the address of their target so when the server answers the request, it sends its answer to the target. “When the resolver sends back the answer, which is larger than the question, it’s amplifying the attacker’s request,” Gaffan said. “Sometimes the answer can be as much as 50 times larger than the request,” he continued. “So an attack can be 50 times the original firepower used for the request.” In addition to improving their techniques, hackers have also increased their efficiencies by shortening their attacks. They will hit a site long enough to bring it down, disappear into the ether, then return to take it down again just as it’s recovering from the initial attack. “When a website goes down, it takes time to bring it back up,” Gaffan said. “There’s no point continuing to fire at that target when it’s down. You want to conserve your ammunition and fly under the radar, because the more you fire the greater the chances of someone identifying you as the source of the fire.” The technique also allows the attackers to get better mileage from their resources. “They could hit multiple targets with a single piece of infrastructure as opposed to hitting one target for an hour,” Gaffan said. Part of the reason attackers are sharpening their skills of deception is that defenders are getting better at blunting DDoS attacks. “The Internet as a whole is getting better at responding to these attacks,” said Cisco Technical Leader for Threat Research, Craig Williams. “We’ve seen DNS amplification shoot through the roof, but I suspect that’s going to start dropping with the addition of RPZs that can mitigate queries and people getting better at closing down open resolvers,” Williams told CSOonline . Source: http://www.networkworld.com/news/2013/073113-ddos-attacks-getting-bigger-but-272389.html?page=2

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DDoS attacks getting bigger but shorter in duration

DDoS: Lessons From U.K. Attacks

While U.S. banking institutions brace for the next wave of distributed-denial-of-service attacks by Izz ad-Din al-Qassam, new cyberthreat research reminds us that no industry or global market is immune to DDoS. A new study from online security provider Neustar shows that DDoS attacks are up in the United Kingdom, just as they are in the U.S., and they’re targeting everything from e-commerce sites to government. It’s not just banking institutions that DDoS attackers want to take down – a truth we’ve been preaching for several months. But now, data proves it. Of the 381 U.K. organizations polled between May and June by Neustar, 22 percent said they suffered from some type of DDoS attack in 2012. By comparison, a survey of 704 North American organizations released in April 2012 showed that 35 percent had been targeted by DDoS within the last year. While the financial services sector has been the primary DDoS target in the U.S., telecommunications companies are the No. 1 target in the U.K., according to the Neustar survey, with 53 percent reporting attacks. Half of U.K. e-commerce companies and 43 percent of online retailers surveyed reported attacks. But only 17 percent of the U.K. financial-services organizations say they had been targeted, compared with 44 percent in the North American survey. The North American data is a bit out of date, so the percentage of financial institutions hit by DDoS is now probably even higher. And attacks aimed at U.K. organizations have been nowhere as fierce as those waged against U.S. banks since September 2012. More Attacks on Way Now that al-Qassam has just announced plans for a fourth phase of attacks, we’re all bracing for more strikes against U.S. banks (see DDoS: Attackers Announce Phase 4 ). But the new survey sends a clear message: No organization is safe from DDoS. “As in North America, U.K. companies face serious challenges as they decide on DDoS protection and attempt to mitigate losses,” Neustar writes in its survey study. “While many companies are hoping traditional defenses will suffice, given the frequency of attacks, their growing complexity and the impact when sites go dark, such hopes are badly misplaced.” U.K. organizations could learn quite a bit from the example U.S. banks have set. Experts have noted time and time again that European banks and others are not well-prepped for DDoS. Despite the fact that the attacks waged against U.S. banks have been among the largest the industry has ever seen, the percentage of U.S. organizations that experienced extended outages was much smaller than that of U.K. organizations, the surveys showed. The defenses U.S. banking institutions have put in place have set a new bar. We already knew that, but now Neustar’s survey results support it. According to Neustar, while online outages lasting about 24 hours affected about 37 percent of both North American and U.K. organizations surveyed, outages lasting more than a week affected 22 percent in the U.K. and only 13 percent in North America. Having a site down for more than a week is an embarrassment, and costly. Can you even imagine a major banking institution’s site being down that long? Banks in the U.S. are prepared for DDoS. But what about other organizations? Are non-banks getting ready for DDoS, or do they still see this as only a threat to banking institutions? What you think? Let us know in the comment section below. Source: http://www.bankinfosecurity.com/blogs/ddos-no-industry-safe-p-1524

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DDoS: Lessons From U.K. Attacks

Network Solutions restores service after DDoS attack

Network Solutions said Wednesday it has restored services after a distributed denial-of-service (DDoS) attack knocked some websites it hosts offline for a few hours. The company, which is owned by Web.com, registers domain names, offers hosting services, sells SSL certificates and provides other website-related administration services. Network Solutions wrote on Facebook around mid-day Wednesday EDT that it was under attack. About three hours later, it said most customer websites should resolve normally. Some customers commented on Facebook, however, that they were still experiencing downtime. Many suggested a problem with Network Solutions’ DNS (Domain Name System) servers, which are used to look up domain names and translate the names into an IP addresses that can be requested by a browser. DDoS attacks are a favored method to disrupt websites and involve sending large amounts of data in hopes of overwhelming servers and causing websites to not respond to requests. Focusing DDoS attacks on DNS servers has proven to be a very effective attack method. In early June, three domain name management and hosting providers — DNSimple, easyDNS and TPP Wholesale — reported DNS-related outages caused by DDoS attacks. Hosting service DNSimple said it came under a DNS reflection attack, where DNS queries are sent to one party but the response is directed to another network, exhausting the victim network’s bandwidth. Source: http://www.pcworld.com/article/2044618/network-solutions-restores-service-after-ddos-attack.html

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Network Solutions restores service after DDoS attack

DDoS attacks are getting bigger, stronger and longer

Prolexic Technologies announced that the average packet-per-second (pps) rate reached 47.4 Mpps and the average bandwidth reached 49.24 Gbps based on data collected in Q2 2013 from DDoS attacks launch…

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DDoS attacks are getting bigger, stronger and longer

Staying Informed About DDoS Threats

Distributed-denial-of-service attacks have plagued U.S. banks since last September. But DDoS attacks pose a persistent, genuine threat to other sectors as well. Any organization with an online presence is at risk. Successful DDoS attacks can take a website offline, damaging brand image and chipping away at consumer trust. But they also can do much more. In some cases, these attacks can be used to mask fraud by distracting security and IT departments while banking accounts or confidential files are simultaneously being taken over. To provide insights on the latest DDoS threats – and effective mitigation strategies – Information Security Media Group has launched a DDoS Resource Center . The resource center, sponsored by online security firms Akamai, Fortinet, Neustar, Radware and VeriSign, includes timely interviews, in-depth features, news stories and blogs that offer insights about emerging botnets and attack techniques from those who are analyzing and battling DDoS on the frontlines. The resource center also offers expert insights on practical steps for minimizing the impact of DDoS attacks. By visiting the resource center, you’ll get the latest information on the different types of DDoS attacks, such as DNS reflection and application layer attacks, as well as the attacks’ possible links to fraud . You’ll learn about DDoS protections and mitigation services , notification and response strategies, and DDoS detection measures. Here’s a sampling of the variety of content our resource center offers: An interview with ex-FBI investigator Shawn Henry , who shares insights about cross-border and cross-industry collaboration that’s taking place behind the scenes to strengthen DDoS and cybersecurity knowledge. An analysis of a new type of DDoS strike that targeted two U.S. banks for what some say could have been a test for more attacks to come. A blog about how the botnet, known as Brobot, that’s been used in DDoS attacks against U.S. banks is being retooled to defeat common mitigation practices. And an interview with former federal banking examiner Amy McHugh about why community banks are prime targets for DDoS strikes being waged as modes of distraction to veil account takeover attempts. The DDoS Resource Center also provides research, white papers and webinars, including a session on new defense strategies for DDoS , which includes insights from Rodney Joffee of DDoS-mitigation provider Neustar and Mike Wyffels, senior vice president and chief technology officer of multibank holding company QCR Holdings Inc. Source: http://www.bankinfosecurity.com/blogs/staying-informed-about-ddos-threats-p-1506

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Staying Informed About DDoS Threats

Tips To Prepare For A DDoS Attack

IT security experts report that distributed denial of service (DDoS) attacks are a growing concern for 2013: this trend is proved by the countless attacks during 2012 and shown from the findings on the latest CSI Computer Crime & Security Survey, which attracts widespread media attention and is one of many online sources that provides valuable information and guidance to information security professionals. How can a business or individual decrease the likelihood of these type of threats? Fortunately, there are methods that can be used in advance to mitigate risk and infections from the amplification of such attacks. Safety First First of all, it is paramount to identify if the network is safe and protected from unauthorized access, malicious content, real-time threats and cyber intrusions. If not, network system managers should consider using traditional security products like a firewall, Intrusion Prevention and Detection Systems (IPDS) and Web application firewall devices to establish a first line of security defense. It is crucial to be responsive and implement the necessary security hardware and software tools ahead of time to defend the perimeter of the network from intrusion and before being the hacker’s target. Business and individuals alike should plan early on and not wait until they are at mercy of the attack to use proper security controls. Malicious attacks, which can be carried out from several compromised systems and from another location (IP address), can enable a rogue attacker to install a series of zombie Trojans to attack or infect (with malware) hosted computers. Whatever reason and motive the intruder has, s/he is able to take over an entire network and initiate a flood or packet attack, all while denying legitimate connections and paralyzing victims’ systems or servers (e.g., Web servers, DNS servers, application servers). The aim is to use up the network bandwidth and bring its operations or services down. Knowing how dangerous such an attack can be, it comes of utmost importance to be familiar with the different kind of DDoS attacks that could affect the network to understand what type of countermeasures should be put to use. Despite the scale and frequency of these attacks, there are ways to be prepared and avoid being vulnerable to this threat that can be so disruptive. Next is a list of tips to prepare and plan, before an attack strikes, which if made a victim of could have devastating effects on one’s business, such as costly downtime and/or lost revenue. Here are six ways to prevent a DDoS attack • Utilize packet filters on the router(s) • Setup a firewall with advanced security • Properly configure webserver with security modules • Implement logging with ACLs and have them in place to filter traffic • Exploit NetFlow for traffic monitoring and tracking down specific attacks • Rely on a third-party cloud DDoS mitigation provider for proprietary filtering technology. This is a great alternative for those that do not want to handle the security themselves and obtain a quick solution that provides on-demand, real-time protection to monitor 24/7 a business or individuals’ on-premises network infrastructure. If you’re looking for reputable provider, I would suggest getting DDoS protection from DOSarrest . Other than the tips listed, it is suggested to always have more bandwidth available, maintain anti-virus software, and deploy IPDS devices or firewalls in front of the servers just in case of a DDoS attack. It is better to spend some time (and money) preparing in advance for this network threat than dealing with a last minute crisis and trying to figure out what needs to be done. Source: http://www.examiner.com/article/tips-to-prepare-for-a-ddos-attack

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Tips To Prepare For A DDoS Attack

Protect Your Website: How to Fight DDoS Attacks

Distributed denial of service (DDoS) attacks, a cyberattack that makes a specific resource unavailable to its intended user, are becoming more complex and sophisticated. Attackers don’t just carry out single attacks — they repeatedly test their target’s security and target their assault to achieve the highest amount of damage. Thousands and thousands of attacks occur daily, shutting down websites and network systems, essentially rendering businesses inoperable. To combat DD0S attacks, the first thing SMBs must do is assume they are going to be a target. Since the only DDoS attacks we hear about are those against large corporations, banks and the government, many SMBs don’t think they will ever be the target of digital warfare. Consequently, they don’t take the necessary precautions to prevent or mitigate attacks. “The reason for an attack could be anything,” said Vann Abernethy, senior product manager for NSFOCUS, a leading global DDoS mitigation solution provider. It could be an extortion attempt, a protest against company practices, or even an act of revenge by a disgruntled client or ex-employee. Unarmed with any technical knowledge, anyone with checkbook and a grudge or statement to make can launch an attack. “Everybody that has a measurable ROI associated with their web presence or anybody that can feel pain from their website being down is a target.” Despite the growing threat of DDoS attacks, most Web service providers will not guard your back, according to Abernethy, as it’s not common to cut off one pipe to protect the network. “If you get hit, they’ll say, ‘We’re gonna protect the rest of our customers by shutting you down.’” Therefore, Abernethy tells businesses to always read the fine print and see what their Web host’s policies are regarding DDoS attacks. While some say they will protect you, most have consumer-grade security that is not strong enough to defend your website against high-volume attacks. “SMBs really have two choices to make,” said Brian Laing, vice president of AhnLab, a security solutions provider. “The first is to use cloud-based applications which can more easily scale up to handle any DDoS attacks.  The second option would be to implement a DDoS solution that can protect against both application and bandwidth (packet flooding) attacks.” Before implementing any type of DDoS defender, SMBs should investigate exactly what type of solution a vendor is providing, according to Laing. For instance, the defense mechanism should be able to recognize good traffic from bad, while also having a self-learning capability to be able to set flexible thresholds. Abernethy agrees. “We see thousands and thousands of attacks every day, so we have both detection and mitigation algorithms. They basically say, ‘That looks like an attack, it smells like an attack, let’s engage our mitigation algorithms.’ It looks at the attack traffic itself and then says, ‘Yes, that is an attack.’ We can detect those attacks and the system can be set up to go into automatic mitigation.” What SMBs need, Abernethy says, is a purpose-built DDoS defender with both detection and mitigation functions to quickly diagnose and mitigate DDoS attacks. The system should also be a “learning machine” that gets to know your environment over time for more precise detection. SMBs should also keep in mind that defending oneself from DDoS attacks doesn’t stop at prevention and mitigation. Because a DDoS attack shuts down your entire operation — and because most anti-DDoS protections are primarily concerned with simply knocking the attack down — you should have a recovery plan that either you or your providers facilitate. Pierluigi Stella, chief technology officer of Network Box USA, global managed security services provider, says that fending off an attack boils down to strategy and having the right resources for defense. “The real problem, though, is that defense is not a piece of hardware but a strategy, wherein the hardware plays an important role, but isn’t the only player,” Stella said. First, if your bandwidth is an old T1 at 1.5 Mbps, Stella advises businesses to upgrade that old Internet connection to one with a much larger bandwidth that can’t be taken down so quickly. A Disaster Recovery (DR) site should also be part of your recovery plan, Stella said. The DR site should have all your data, so it will serve as your temporary site as you work on getting the current one back up. Ryan Huber, chief architect at Risk I/O, a leader in vulnerability intelligence, says that depending on your business, a simpler option is a static page, such as product literature or other representation of your site. This will temporarily disable site functions such as online ordering, but serves its damage-control purpose of not keeping customers in the dark as you get the full site running. “This has the added benefit of helping you to keep users informed during the attack,” he said. Abernethy recommends that anyone who does business online do regular, full backups. The recovery plan should also include critical details, such as what the recovery process is, where data backups are stored and who is responsible for which tasks. Disaster-recovery planning should also be part of regular operational maintenance. “Don’t just make a plan and think you are covered,” Abernethy said. “Get into the habit of reviewing the full plan each backup cycle to ensure any changes are accounted for. It sounds like a lot of extra work, but it really isn’t if you build it into your normal routine.” As Stella says, businesses should always be in ‘prepared mode.’ “Don’t wait for the hurricane to strike.” For protection against your eCommerce site click here . Source: http://www.businessnewsdaily.com/4667-ddos-attacks-small-business.html

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Protect Your Website: How to Fight DDoS Attacks

LinkedIn outage was due to DNS records misconfiguration

The mystery of the LinkedIn outage has been revealed: Network Solutions, its DNS provider, has been battered by a DDoS attack and while defending itself, misconfigured the DNS records of some of its c…

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LinkedIn outage was due to DNS records misconfiguration

LinkedIn DDoS response botched

More than half of Linkedin’s members were knocked off the service for an extended period yesterday following a botched response to a DDOS by service provider Network Solutions. Users were redirected in error to India-based website confluence-networks.com which did not require Secure Sockets Layer connections meaning users’ cookies were sent in clear text. Initial media reports suggested the company’s DNS had been hijacked and user security potentially compromised as user’s cookies may have been visible as plain text during the outage. Linkedin subsequently confirmed on Twitter that the outage was due to human error not malice. “Yesterday’s issue was not malicious in any way It was an error by the company that manages our domain,” the statement said. In a post on its site the company claimed LinkedIn member data was not compromised. For protection against your eCommerce site click here . Source: http://www.scmagazine.com.au/News/347578,linkedin-ddos-response-botched.aspx

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LinkedIn DDoS response botched

LulzSec Hacker Ryan Cleary To Be Released

Convicted LulzSec hacker Ryan Cleary, 21, is set to be released “imminently” after appearing Wednesday in a London courtroom for sentencing relating to charges that he made and possessed 172 indecent images of children on his PC. “Some of these images showed children aged as young as six months old in circumstances where they were completely vulnerable,” Judge Deborah Taylor told Cleary, reported The Independent in Britain. “These images were such as would make any right-minded person concerned at you viewing such images.” Cleary, aka Viral, previously pleaded guilty to two charges of making indecent images of children and one charge of possessing indecent images of children. Taylor said Wednesday that although U.K. sentencing guidelines required incarceration for the offenses to which Cleary had plead guilty, “time has been served in any event.” Based on time served, his pleading guilty to all charges filed against him and agreeing to wear an electronic device that will monitor his location, Cleary received a three-year community service order, which requires that he work in the community without pay. He also received a 36-month supervision order, which is akin to probation and requires that Cleary meet weekly with his probation officer. Finally, Cleary was ordered to sign the U.K.’s Violent and Sex Offender Register, which is a database used by police and prison officials to track people convicted of related offenses. Cleary previously appeared in court last month, when he was sentenced to 32 months in prison, followed by a five-year serious crime prevention order that can be used to restrict where he’s allowed to travel and which jobs he’ll be allowed to work. Also sentenced in May were fellow LulzSec participants Jake Davis (Topiary), Mustafa al-Bassam (Tflow) and Ryan Ackroyd (Kayla). Together with Cleary, they pleaded guilty to charges of hacking a number of sites, including the CIA, Britain’s Serious Organized Crime Agency (SOCA) and National Health Service (NHS), and Sony Pictures Entertainment, as well as leaking the credit card data and personal information of hundreds of thousands of people. Cleary also pleaded guilty to launching numerous distributed denial of service (DDoS) attacks under the banners of Anonymous, Internet Feds and LulzSec. British police said the attacks in which Cleary participated caused an estimated $31 million in damages. British police said that when they arrested Cleary at his home on June 20, 2011, they found him in the middle of launching a DDoS attack against the website of SOCA, which was conducting a joint investigation with the FBI into the activities of LulzSec, Anonymous and AntiSec. Clearly was first arrested in 2011 and released on bail, subject to his refraining from using the Internet. He was re-arrested on bail violation charges on March 5, 2012, for going online in December 2011 to contact LulzSec leader Sabu. The day after Cleary’s arrest, federal officials revealed that in June 2011, Sabu — real name Hector Xavier Monsegur — had been arrested and turned confidential government informant, and was helping the FBI investigate hackers and information security attacks. The news of Cleary’s imminent release after serving less than his full jail sentence has led some members of Anonymous to accuse him of having cut a deal with authorities, although no evidence has been produced to back up that assertion. “Anyone who gets away with child porn charges is obviously collaborating with the feds,” according to a post by “ro0ted” to the pro-Anonymous CyberGuerilla blog. Cleary’s legal troubles might not be over, as he was indicted last year by a Los Angeles federal grand jury on hacking charges. But his attorney, Karen Todner, said last year that U.S. prosecutors had indicated that they wouldn’t be seeking his extradition. Furthermore, if that changed, she said her client would fight any such request. “Cleary suffers from Asperger’s syndrome and is on the autistic spectrum and extradition to the United States is totally undesirable,” she said. Source: http://www.informationweek.com/security/attacks/lulzsec-hacker-ryan-cleary-to-be-release/240156590?cid=RSSfeed_IWK_Government

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LulzSec Hacker Ryan Cleary To Be Released