Category Archives: DDoS News

DDoS attacks hitting ‘record-breaking’ levels as volumes increase 380%

DDoS attackers are hitting hard, fast and with no breaks in between, leading to record-breaking attacks over hours or even days, according to Nexusguard’s Q1 2017 Threat Report. Those record-breaking attacks over Valentine’s Day, Chinese New year and other ‘typically quiet’ periods during the season. “In APAC, a lengthy attack January 28-31, the period of Chinese New Year, lasted 2 days, 19 hours, and 40 minutes. It was a widespread, disruptive event that left celebrants weary and exhausted upon returning to work,” the report says. DDoS attack volumes have also risen 380% since the same time last year, according to Nexusguard’s statistics, based on 16,600 attacks. While 51% of attacks lasted fewer than 90 minutes, 4% exceeded 1440 minutes. 77.3% of attacks were less than 10Gbps, while 20% were between 10-200Gbps and 2% exceeded 200Gbps. The United States, China and Japan rounded out the top three sources for attacks. The rest of APAC was relatively unused as an attack source. However it’s not just DDoS attacks that are on the rise: HTTP flood attacks jumped 147% in the last quarter alone. It is now one of the leading volumetric attacks, exceeding both TCP and DNS attacks. The company cites the Internet of Things as a major weak point, particularly as the range of insecure devices and connections expodes. DDoS attacks can be persistent and long-lasting, which is a major area of concern. “IoT botnets are only the beginning for this new reign of cyber attacks. Hackers have the scale to conduct gigantic, continuous attacks; plus, teams have to contend with attacks that use a combination of volumetric and application aspects,” comments Nexusguard’s CTO Juniman Kasman. Those attacks are not happening in isolation. 93% of attacks combine application and volumetric vulnerabilities. Multiple DDoS attacks can also overwhelm systems. The company warns that organisations that haven’t invested in – or haven’t upgraded – multi-layered defense mechanisms run the highest risk of attack exposure. “This early data for 2017 shows that enterprises need to employ multi-layered defenses that use nimble resources, including large, redundant scrubbing networks and around-the-clock security operations if they hope to keep from drowning in the deluge of new attacks,” Kasman adds. Source: https://securitybrief.co.nz/story/ddos-attacks-hitting-record-breaking-levels-volumes-increase-380/

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DDoS attacks hitting ‘record-breaking’ levels as volumes increase 380%

If You Learn of DDoS Attacks from Customers, You’ve Already Failed

If your customers notice something’s wrong before your own security specialists do, you’ve failed on multiple levels When Benjamin Franklin said, “Time is money,” he gave the world an aphorism that would be quoted frequently by businesspeople for more than 200 years. For all his wit and insight, of course, Franklin could never have foreseen the many scenarios for which his pithy observation would come to apply. It turns out that among the most relevant applications of the quote in today’s digitally driven world is in the realm of cybersecurity. Why? Because for organizations that suffer a cyberattack, a slow response can prove very costly. In an early 2017 survey of more than 1,000 IT and business decision makers, nearly two-thirds of the respondents said they could lose $100,000 per hour or more if a distributed denial of service (DDoS) attack were to disrupt their peak business periods. On the bright side, 8 in 10 of the organizations responding to the Neustar-sponsored survey said they’ve learned about new DDoS attacks from their internal security and IT teams – at least sometimes. Less encouraging is the fact that 40% also said they have, at times, received their first notification of attacks from their customers. If your customers notice something’s wrong before your own security specialists do, you’ve failed on multiple levels. The ideal DDoS defense is to recognize an emerging threat and neutralize it before it even gains a foothold – and certainly before your customers experience any negative impacts. If customers start complaining about an inability to access your websites or other services, you’ve already started to lose money before you’re even aware of the problem. Beyond causing staggering monetary losses for many corporations, successful DDoS attacks can alienate customers and shake their confidence in the victim’s ability to secure its own systems. By extension, customer then worry about the security of their own interactions with the company, and about the safety of any customer data the company may hold. The resulting customer churn and reduced loyalty can result in additional financial consequences. In this regard, another Franklin quote sadly holds true: “It takes many good deeds to build a good reputation, and only one bad one to lose it.” Fortunately, there are many security tools and services available to organizations that decide to be proactive in their DDoS defenses. As is often the case when it comes to cybersecurity, the most effective defenses will leverage a layered approach. The first-level of defense for DDoS attacks ideally will be provided by the network or Internet service provider, which is often the first to see – and block – suspicious network activity. For those attacks that still manage to get through, companies need their own DDoS identification and mitigation solutions. Some of those solutions may be on-premises appliances and other controls, while others may be provided by cloud-based or managed security services providers. Such “security-as-a-service” offerings are rapidly gaining in popularity, especially if an attack’s scale exceeds the capabilities of the on-premises protections. In short, there’s little excuse to be reactive, rather than proactive, when it comes to DDoS defenses. And, yes, Franklin once again provides some sage advice to those who may be too cavalier in their attitudes about DDoS threat. “By failing to prepare, you are preparing to fail.” Source: http://www.csoonline.com/article/3200084/leadership-management/if-you-learn-of-ddos-attacks-from-customers-you-ve-already-failed.html

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If You Learn of DDoS Attacks from Customers, You’ve Already Failed

Attack rates are increasing across the board

Finance and technology are the sectors most resilient to cyber intrusions, new research from Vectra Networks has found. The company released the results of its Post-Intrusion Report, based on data from a sample set of nearly 200 of its enterprise customers. They looked at the prevalence of strategic phases of the attack lifecycle: command-and-control (C&C), reconnaissance, lateral movement, botnet, and exfiltration attacker behaviours across thirteen industries. Over 90 days (January-March 2017), the company monitored 2,145,708 … More ?

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Attack rates are increasing across the board

Operators beware: DDoS attacks—large and small—keep increasing

Despite years’ worth of warnings and countermeasures, distributed denial of service (DDoS) attacks continue to escalate. Every year sees more of them, with increasing duration and severity. The frequency was up by 380% in the first quarter of 2017 compared to the first quarter of 2016, according to Nexusguard, which compiled this set of statistics (PDF) in a new report. From the fourth quarter of 2016 to the first quarter of 2017, HTTP attack counts and total attack counts increased by 147% and 37% respectively. Examples of increasing severity include a 275 Gbps attack that took place during Valentine’s Day (there have been significantly larger attacks) and an attack spanning 4,060 minutes that occurred over the Chinese New Year, the company said. The percentage of days with sizable attacks (larger than 10Gbps) grew appreciably within the quarter for 48.39% in January to 64.29% in March. Lengthier attacks at erratic intervals are becoming the norm, the company said. A separate, simultaneously published report from Corero Network Security said its customers have been hit by an increasing number of small DDoS attacks. Though attacks of 10 Gbps or smaller would seem less severe, what’s insidious about them is that they are apt to sneak under minimum detection thresholds. Though the DDoS attacks themselves might not be that disruptive, they can give hackers the access to wreak plenty of other damage. Corero CEO Ashley Stephenson said in a statement, “Short DDoS attacks might seem harmless, in that they don’t cause extended periods of downtime. But IT teams who choose to ignore them are effectively leaving their doors wide open for malware or ransomware attacks, data theft or other more serious intrusions. Just like the mythological Trojan Horse, these attacks deceive security teams by masquerading as a harmless bystander—in this case, a flicker of internet outage—while hiding their more sinister motives.” Nextguard believes part of the increase in DDoS activity is a ripple effect of increased botnet activity that occurred in the fourth quarter. This is in part a reference to the Mirai botnet, which was first identified in the latter half of 2016. Mirai provided a means to take over connected deviceswith inadequate built-in security safeguards (webcams, some set-top boxes, etc.), and use them to launch sustained attacks, sometimes with spectacular results. Those attacks revealed the Achilles’ heel in the internet of things: Many IoT applications are based on the distribution of large numbers of very inexpensive devices, which can be made so cheaply in part by adopting only minimal security, if any. The DDoS problem is worldwide, but nearly a quarter of the attacks are launched from the U.S. (followed by China and Japan). That’s likely to remain the case, as more U.S. households install “smart” devices that have poorly guarded IP addresses, making them susceptible to hijacking in the service of more DDoS attacks. “IoT botnets are only the beginning for this new reign of cyberattacks. Hackers have the scale to conduct gigantic, continuous attacks; plus, teams have to contend with attacks that use a combination of volumetric and application aspects,” said Nexusguard CTO Juniman Kasman, in a statement. The two largest sources of DDoS attacks were China and Japan, with Russia a distant third. The release of such results is meant to emphasize what should be obvious: companies that haven’t upgraded their security are the most vulnerable. Source: http://www.fiercetelecom.com/telecom/operators-beware-ddos-attacks-large-and-small-keep-increasing

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Operators beware: DDoS attacks—large and small—keep increasing

Mini but mighty: Beware minor DDoS attacks that mask graver threats, warns report

Despite detecting an increase in large distributed denial of service attacks in the first quarter of 2017, Corero Network Security has reported that the greatest DDoS threat currently comes from smaller attacks designed to either hide other malicious activities or set the stage for future malicious actions. Corero, which specializes in DDoS prevention, noted in its just released Q4 2016 – Q1 2017 Trends Report that these “sub-saturation” attacks typically fall within a certain sweet spot: They are short enough in duration and small enough in size to avoid detection by mitigation tools, yet they are still significant enough to serve the attacker’s purpose. According to the company, many legacy and homegrown mitigation tools will not respond to attacks that are less than one Gbps in size and under than 10 minutes in duration, because they do not meet a certain pre-programmed threshold. “…They are just disruptive enough to knock a firewall or intrusion prevention system (IPS) offline so that the hackers can target, map and infiltrate a network to install malware and engage data exfiltration activity,” said Ashley Stephenson, CEO at Corero Network Security, in a company press release. In other cases, the attackers may simply be testing a network for weaknesses, in anticipation of a future malicious action down the line. But even if the DDoS attack is detected, network administrators may too busy responding to the outage to realize that there is actually a bigger threat at hand. In an email to SC Media, Stephanie Weagle, vice president at Corero, cited UK-based telecom company TalkTalk as a recent example. In 2015, hackers stole the company’s customer data using a DDoS attack as an effecitve distraction. “Short DDoS attacks might seem harmless, in that they don’t cause extended periods of downtime. But IT teams who choose to ignore them are effectively leaving their doors wide open for malware or ransomware attacks, data theft or other more serious intrusions,” Stephenson explained. “Just like the mythological Trojan Horse, these attacks deceive security teams by masquerading as a harmless bystander – in this case, a flicker of internet outage – while hiding their more sinister motives.” According to the report, 80 percent of attempted DDoS attacks that were launched against Corero customers in Q1 2017 were less than 1 Gbps in volume, while 71 percent lasted 10 minutes or less. In Q4, 77 percent of DDoS attacks were less than 1 Gbps in volume, while 73 percent were 10 minutes or less in duration. While smaller attacks remain the norm, Corero did see a 55 percent rise in DDoS attacks that were 10 Gbps or larger in Q1, compared to the previous quarter. Corero customers averaged 124 attacks per month in Q1, an increase of nine percent over Q4 2016. Source: https://www.scmagazine.com/mini-but-mighty-beware-minor-ddos-attacks-that-mask-graver-threats-warns-report/article/666432/

Stealthy DDoS attacks distract from more destructive security threats

The greatest DDoS risk for organisations is the barrage of short, low volume attacks which mask more serious network intrusions. Despite several headline-dominating, high-volume DDoS attacks over the past year, the vast majority (98%) of the DDoS attack attempts against Corero customers during Q1 2017 were less than 10 Gbps per second in volume. In addition, almost three quarters (71%) of the attacks mitigated by Corero lasted 10 minutes or less. Due to their small … More ?

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Stealthy DDoS attacks distract from more destructive security threats

Lawmakers seek answers on alleged FCC DDoS attack

Five Democratic senators are seeking an FBI investigation into possible cyberattacks on the Federal Communication Commission’s online comment system. The FCC’s Electronic Comment Filing System crashed in the early hours of May 8 in what the agency called “deliberate attempts by external actors to bombard” the commission and render its systems unusable by legitimate commenters. Sens. Brian Schatz (D-Hawaii), Al Franken (D-Minn.), Patrick Leahy (D-Vt.), Ed Markey (D-Mass.) and Ron Wyden (D-Ore.) want acting FBI director Andrew McCabe to make an investigation of that May disruption a priority, and also called for an investigation into the source of the attack. The senators’ letter emphasized that they were especially troubled by the disruption of the process of public commentary given that public participation is crucial to the integrity of the FCC’s regulatory process. The request comes as FCC Chairman Ajit Pai is moving to roll back Obama-era net neutrality regulations over the objections of Democrats in Congress and internet freedom activists. “Any cyberattack on a federal network is very serious,” the senators wrote. “This particular attack may have denied the American people the opportunity to contribute to what is supposed to be a fair and transparent process, which in turn may call into question the integrity of the FCC’s rulemaking proceedings.” The senators seek a reply by June 23. It’s possible, however, that what the FCC is reporting as a DDoS attack was in fact a traffic spike spurred by TV comedian John Oliver, who urged viewers to register their opposition to the net neutrality rollback in an May 7 broadcast. The partisan fight over FCC actions on net neutrality has cast a political shadow over the attack, the follow-up and any future investigation. Three of the letter’s five signatories (Schatz, Markey, Franken) also signed a May 17 open letter lambasting the FCC’s possible net neutrality rollback. Wyden and Schatz also sought clarification from Pai about the ability of the agency to protect against DDoS attacks in a separate May 9 letter. The two sought details on the user capacity of the FCC’s website and requested a reply by June 8. Meanwhile, the FCC is accepting comments on its net neutrality proceeding through Aug. 16. Source: https://fcw.com/articles/2017/05/31/fcc-ddos-senators-berliner.aspx

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Lawmakers seek answers on alleged FCC DDoS attack

Report: DDoS attacks are less common, but they’re bigger

Information security company Verisign just published its Distributed Denial of Trends Report for Q1 2017. This report talks about changes in the frequency, size, and type of DDoS attack that the company has observed over the first few months of this year. The main takeaway is this: The number of DDoS attacks has plunged by 23 percent compared to the previous quarter. That’s good! However, the average peak attack size has increased by almost 26 percent, making them vastly more potent at taking down websites and critical online infrastructure. That’s bad. The report also notes that attacks are sophisticated in nature, and use several different attack types to take down a website. While 43 percent use just one attack vector, 25 percent use two, and six percent use five. This, obviously, makes it much more difficult to mitigate against. Verisign’s report also talks about the largest DDoS attack observed by the company in Q1. This was a multi-vector attack that peaked at 120 Gbps, and with a throughput of 90 Mpps. Per the report: This attack sent a flood of traffic to the targeted network in excess of 60 Gbps for more than 15 hours. The attackers were very persistent in their attempts to disrupt the victim’s network by sending attack traffic on a daily basis for over two weeks. The attack consisted primarily of TCP SYN and TCP RST floods of varying packet sizes and employed one of the signatures associated with the Mirai IoT botnet. The event also included UDP floods and IP fragments which increased the volume of the attack. So, in short. The attackers were using several different attack types, and they were able to sustain the attack over a long period of time. This shows the attacker has resources, either to create or rent a botnet of that size, and to sustain an attack over two weeks. The fact that DDoS attacks have increased in potency is hardly a surprise. They’ve been getting bigger and bigger, as bad actors figure out they can easily rope insecure Internet of Things (IoT) devices into their botnets. The Mirai botnet, for example, which took down Dyn last year, and with it much of the Internet, consisted of hundreds of thousands of insecure IoT products. The main thing you can gleam from the Verisign report is that DDoS attacks are increasingly professional, for lack of a better word. It’s not 2005 anymore. We’ve moved past the halcyon days of teenagers taking down sites with copies of LOIC they’d downloaded off Rapidshare. Now, it’s more potent. More commoditized. And the people operating them aren’t doing it for shits and giggles. Source: https://thenextweb.com/insider/2017/05/24/report-ddos-attacks-are-less-common-but-theyre-bigger/#.tnw_RJHfi1AZ

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Report: DDoS attacks are less common, but they’re bigger

DDoS attacks shorter and more frequent: 80% now take less than an hour

During Q1 2017, a reduction in average DDoS attack duration was witnessed, thanks to the prevalence of botnet-for-hire services that commonly used short, low-volume bursts. Imperva Incapsula’s latest Global DDoS Threat Landscape Reportanalysed more than 17,000 network and application layer DDoS attacks that were mitigated during Q1 2017. Igal Zeifman, Incapsula security evangelist at Imperva told SC Media UK: “These attacks are a sign of the times; launching a DDoS assault has become as simple as downloading an attack script or paying a few dollars for a DDoS-for-hire service. Using these, non-professionals can take a website offline over a personal grievance or just as an act of cyber-vandalism in what is essentially a form of internet trolling.” The research found that more and more assaults occurred in bursts, as 80 percent of attacks lasted less than an hour. Three-quarters of targets suffered repeat assaults, in which 19 percent were attacked 10 times or more. For the first time, 90 percent of all network layer attacks lasted less than 30 minutes, while only 0.1 percent of attacks continued for more than 24 hours. The longest attack of the quarter continued for less than nine days. Researchers observed a higher level of sophistication on the part of DDoS offenders, reflected by the steep rise in multi-vector attacks. These accounted for more than 40 percent of all network layer assaults in Q1 2017. In terms of worldwide botnet activity, 68.8 percent of all DDoS attack requests originated in just three countries; China (50.8 percent), South Korea (10.8 percent) and the US (7.2 percent). Others on the attacking country list included Egypt (3.2 percent), Hong Kong (3.2 percent), Vietnam (2.6 percent), Taiwan (2.4 percent), Thailand (1.6 percent), UK (1.5 percent) and Turkey (1.4 percent). The US, UK and Japan continued to top the list of most targeted countries. Over the past year Singapore and Israel joined that list for the first time. Source: https://www.scmagazineuk.com/ddos-attacks-shorter-and-more-frequent-80-now-take-less-than-an-hour/article/663591/

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DDoS attacks shorter and more frequent: 80% now take less than an hour

There’s now a WannaCry decryptor tool for most Windows versions

As the criminals behind the WannaCry ransomware are trying to make it work again, security researchers have created tools for decrypting files encrypted by it. DDoS attacks against the killswitch domains Since researcher Marcus Hutchins (aka MalwareTech) registered a (previously non-existent) killswitch domain for the malware and stopped its onslaught, the domain has been under attack by Mirai-powered botnets. Today’s Sinkhole DDoS Attack pic.twitter.com/wxT2YUrdOF — MalwareTech (@MalwareTechBlog) May 18, 2017 That particular domain has been … More ?

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There’s now a WannaCry decryptor tool for most Windows versions