Cloudflare says it mitigated a record-breaking distributed denial of service (DDoS) attack in May 2025 that peaked at 7.3 Tbps, targeting a hosting provider. DDoS attacks flood targets with , Previous record-breaking DDoS attacks seen by Cloudflare reached 5.6 Tbps and 6.5 Tbps. Cybersecurity blogger Brian Krebs reported last month that his website had been targeted in a 6.3 Tbps attack. The 7.3 Tbps DDoS attack, seen by Cloudflare in mid-May, lasted only 45 seconds and it was aimed at a hosting provider., The 7.3 Tbps attack was a multivector DDoS attack. Around 99.996% of the attack traffic was categorized as UDP floods. However, the remaining 0.004%, which accounted for 1.3 GB of the attack traffic, were identified as QOTD reflection attacks, Echo reflection attack, NTP reflection attack, Mirai UDP flood attack, Portmap flood, and RIPv1 amplification attacks., In May 2025, Cloudflare successfully mitigated the largest distributed denial-of-service (DDoS) attack ever recorded, peaking at a staggering 7.3 terabits per second. The volumetric assault , which lasted under a minute but delivered 37.4 terabytes of traffic, was autonomously blocked by Cloudflare’s global mitigation systems without human , A Massive Distributed Denial-Of-Service (ddos) Attack reached A Record-Breaking 7.3 Terabits Per Second, Threatening Internet Stability. Cloudflare, A Leading Internet Security firm, Reported The Unprecedented Cyber Assault, Which Highlighted The Growing Sophistication And Scale Of Ddos Attacks. The , .