Tag Archives: ddos

Massive DDoS attack targets Spamhaus

The DDoS attacks mounted against Spamhaus over a week ago have escalated in the last few days, reaching a never previously experienced level of some 300 gigabits per second at peak hours, says Akamai.

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Massive DDoS attack targets Spamhaus

Wells Fargo warns of ongoing DDoS attacks

Wells Fargo warned on Tuesday that its website is being targeted again by a distributed denial-of-service (DDOS) attack. The bank said most of its customers were not affected. “For customers who are having difficulty accessing the site and mobile banking, we encourage them to try logging on again as the disruption is usually intermittent,” Wells Fargo said in a statement. Wells Fargo is one of several large U.S. banks that have been targeted by cyberattacks in the past six months. A group claiming responsibility for the attacks, the Izz ad-Din al-Qassam Cyber Fighters, said Wells Fargo is being targeted due to the continued availability online of a video clip that denigrates Islam. The 14-minute trailer, available on YouTube, caused widespread protests last September in predominantly Muslim countries. Google restricted viewing in countries including India, Libya and Egypt but kept it available in most countries because it didn’t violate the company’s guidelines. The Izz ad-Din al-Qassam Cyber Fighters wrote on Pastebin on Tuesday that it was also targeting Citibank, Chase Bank, SunTrust and others. The group drew up a mock invoice, calculating the cost to a bank of a DDOS attack at about US$30,000 per minute. It contained a formula for how much the banks should lose based on the number of times the offensive video has been watched. The group did not spell out how the attacks would cost the banks money or why it was attacking those banks. For DDoS protection click here . Source: http://www.itworld.com/security/349835/wells-fargo-warns-ongoing-ddos-attacks

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Wells Fargo warns of ongoing DDoS attacks

Seal with Clubs goes down due to DDoS Attack

Bitcoin poker site, Seals with Clubs, was twice targeted by a Distributed Denial of Service (DDoS) attack this weekend – forcing it offline for three days. It is not known why the US-facing poker site was targeted for the DDoS attacks – in which multiple computer systems overload a single web site with incoming traffic – or who was responsible. The first attack started on Thursday evening (local time) when the site became inaccessible to regular players while those who were already logged in found that their games stalled and then the site crashed. Seal with Clubs´ CEO Bryan Micon was quick to re-assure players on the site that no accounts had been compromised and the Seals with Clubs Twitter account kept clients up to date with the progress of “Seal Team 6” as the site battled to get the software transferred to a new data centre. However, shortly after getting up and running on Sunday, Seals with Clubs was hit by a second, smaller DDoS attack which knocked out all the Sunday feature tournaments on the site. Protection Implemented Against Further Attacks [The first attack] was a large DDoS, very sophisticated and quite powerful enough to knock everything off, get an IP blackholed, all that good stuff, Micon said in a statement to PokerFuse.com. We have quickly, in the middle of the weekend, changed datacenters and have a new, beefier setup with all of our data intact and a sick DDoS protection layer. New software has also been integrated into the Seals with Clubs downloadable client to add further protection, and players have been advised that they will have to update their existing software to enable them to play on Seals with Clubs. An update to the Seals with Clubs Android App is also expected later today (Monday). The Seals are Back By late Sunday evening, Seals with Clubs was back online and saw more than 300 players on the cash game tables with several low-value tournaments under way. Due to the change of data centres, players who recently deposited into their accounts may have to wait until Monday to see the funds appear in the cashier; however facilities for getting Bitcoin funds out of players´ accounts are operating normally with withdrawal requests dealt with in a matter of hours. Players who were involved in poker tournaments at the time of the DDoS attack have been told that they will receive “generous refunds” in respect of their tournament buy-ins. Source: http://www.pokernewsreport.com/seal-with-clubs-gets-battered-in-ddos-attack-12029

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Seal with Clubs goes down due to DDoS Attack

Anti-spam Spamhaus up again after 75Gbps Distributed Denial of Service (DDoS) Attacks

The website of non-profit spam fighter Spamhaus is online again after a huge DDoS attack knocked it offline on Sunday, but attackers are continue to target another anti-spam sites that help ISPs combat spam from infected IP addresses. Spamhaus, which provides several anti-spam DNS-based blocklists and maintains the “register of known spam operations”, came under a huge DDoS attack on Sunday, which knocked its web server and mail server offline until Wednesday. Spamhaus spokesperson Luc Rossini on Monday denied a report that Anonymous was behind the attack and pointed to a “Russian criminal malware gang” as the source. On Tuesday Spamhaus sought cover from the attack with DDoS protection provider CloudFlare, which today reported the attack on Spamhaus reached a peak of about 75 gigabits per second. The attackers used a cocktail of DDoS attack methods, but the primary one that helped generate that volume of traffic was a “reflection attack”, according to Matthew Prince, CloudFlare’s CEO. “The basic technique of a DNS reflection attack is to send a request for a large DNS zone file with the source IP address spoofed to be the intended victim to a large number of open DNS resolvers,” Prince explained, noting that 30,000 open DNS resolvers were recorded in the attack, which used spoofed IP addresses CloudFlare had issued to Spamhaus. “The resolvers then respond to the request, sending the large DNS zone answer to the intended victim. The attackers’ requests themselves are only a fraction of the size of the responses, meaning the attacker can effectively amplify their attack to many times the size of the bandwidth resources they themselves control.” Source: http://www.cso.com.au/article/456917/anti-spam_spamhaus_up_again_after_75gbps_ddos_attack/

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Anti-spam Spamhaus up again after 75Gbps Distributed Denial of Service (DDoS) Attacks

Distributed Denial of Service-DDoS: 6 Banks Hit on Same Day

Six leading U.S. banking institutions were hit by distributed-denial-of-service attacks on March 12, the largest number of institutions to be targeted in a single day, says security expert Carl Herberger of Radware. The attacks are evolving, and the bot behind them, known as Brobot, is growing, he adds. This recent wave of DDoS attacks has proven to be the most disruptive among the campaigns that date back to September, says Herberger, vice president of security for the anti-DDoS solutions provider. “The Brobot has grown, the infection rate has increased, and the encrypted attacks have become more refined,” Herberger says. “As a result, it all is more effective. They’ve clearly gotten better at attacking more institutions at once.” Radware offers DDoS-mitigation tools to several high-profile clients, including U.S. banking institutions targeted in the recent attacks, Herberger says. As a result, the company has insights about numerous industrial sector attacks as well as online traffic patterns. Herberger declined to name the institutions affected, citing Radware’s non-disclosure agreements. But according to online traffic patterns collected by Internet and mobile- cloud testing and monitoring firm Keynote Systems Inc., JPMorgan Chase & Co., BB&T and PNC Financial Services Group suffered online outages on March 12. The three banks declined to comment about the attacks or confirm whether they had been targeted this week. Chase, however, acknowledged an online disruption in a March 12 post to the Chase Twitter f e ed . The post states: “*ALERT* We continue to work on getting Chase Online back to full speed. In the meantime, pls. use the Chase Mobile app or stop by a branch.” On March 13, the bank came back with this tweet: “We’re sorry it was such a rough day and we really appreciate your patience.” Phase 3 Attacks The hacktivist group Izz ad-Din al-Qassam Cyber Fighters on the morning of March 12 posted an update in the open forum Pastebin about its third phase of attacks. In it, the group mentions nine targets struck during the previous week. The group claims it is waging its attacks against U.S. banking institutions over a Youtube video deemed offensive to Muslims. The nine latest targets identified by the hacktivists – Bank of America, BB&T, Capital One, Chase, Citibank, Fifth Third Bancorp, PNC, Union Bank and U.S. Bancorp – have either declined to comment or have denied suffering any online disruptions. But Keynote Systems says Chase, BB&T and PNC suffered major online failures between 12:30 p.m. and 11 p.m. ET on March 12. Outages suffered by Chase resulted in a nearly 100 percent failure rating between the hours of 2 p.m. ET and 11 p.m. ET, says Ben Rushlo, Keynote’s director of performance management. “That means the site was unavailable most of that time. That’s pretty massive.” BB&T also had significant issues, but not quite so severe, Rushlo says. Between 12:30 p.m. and 2:30 p.m. ET, and then again briefly at 5:30 p.m. ET, BB&T’s online-banking site suffered intermittent outages, he adds. PNC’s site suffered a significant outage for a 30-minute span beginning bout 3:30 p.m. ET, Rushlo says. “On a scale relative to Chase, they were affected 10 times less.” Rushlo stresses that Keynote cannot confirm the cause of the online outages at the three banks because the company does not monitor DDoS activity; it only monitors customer-facing applications. Nevertheless, the online analysis Keynote conducts is in-depth, Rushlo contends. “We’re actually going behind the logons to emulate what the customer sees or experiences when they try to conduct online-banking,” he says. Defeating DDoS Radware’s Herberger says some institutions have successfully mitigated their DDoS exposure, while others are only succeeding at masking the duress their online infrastructures are experiencing. “There has been a lot of quick provisioning to address these attacks,” he says. “But if something changes, like it has now, then the whole game changes and the whole equilibrium changes. It’s not really solving the problem; it’s just addressing a glitch.” More banking institutions need to go beyond Internet protocol blocking to address attacks that are aimed at servers and site-load balancers, he says. But many organizations have failed to take the additional steps needed to successfully and consistently deflect these emerging DDoS tactics. “The thing that’s kind of frustrating to all of us is that we are six months into this and we still feel like this is a game of chess,” Herberger says. “How is it that an industry that has been adorned with so many resources – with more than any other industrial segment in U.S. – missed the threat of hacktivist concerns? There seems to clearly be industrial sector vulnerabilities that were missed in all of the historical risk assessments.” For DDoS protection click here . Source: http://www.bankinfosecurity.com/ddos-6-banks-hit-on-same-day-a-5607

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Distributed Denial of Service-DDoS: 6 Banks Hit on Same Day