Cloudflare reported a record number of hyper-volumetric DDoS attacks over the Feb. 11 weekend, detecting and mitigating more than a dozen attacks with an average of 50 million to 70 million requests per second.The largest attack exceeded 71 million rps, which is the largest reported HTTP DDoS attack, according to Cloudlare's research. The volume is 35% higher than the previously reported record of 45 million rps from June 2022. Cloudflare detailed the attacks in a late Feb. 13 blog post.The report follows a spate of DDoS attacks against critical infrastructure, including the ongoing massive Killnet campaign impacting at least 17 provider organizations. Industry leaders just yesterday warned the hacktivist group is already in the middle of a second round of attacks against the sector.However, Cloudflare researchers do not believe the weekend’s surge of DDoS attacks are tied to the healthcare campaign, nor is it likely the attacks were tied to Sunday’s Super Bowl. Threat actors have ramped up the size, sophistication, and frequency of DDoS attacks over the last several months. Cloudflare’s previous DDoS report showed the amount of HTTP-based DDoS attacks grew by 79% in the last year, and attacks with volumes exceeding 100 Gbps increased by 67% from the previous quarter. “But it doesn’t end there. The audacity of attackers has been increasing as well,” researchers wrote. Cloudflare also observed a steady increase of DDoS attacks with ransom demands throughout 2022 that peaked in November.
Application security, Vulnerability Management
Cloudflare blocked largest reported DDoS attack at 71M requests per second

Cloudflare blocked the largest-reported DDoS attack over the Feb. 11 weekend, with one attack exceeding 71 million requests per second. (iStock via Getty Images)
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