<ul data-eligibleForWebStory="true"><li>Cloudflare successfully blocked a record-breaking 7.3 Tbps DDoS attack in May 2025, surpassing the previous peak by 12%.</li><li>The attack targeted a hosting provider using Cloudflare's DDoS protection solution, Magic Transit.</li><li>In January and February 2025, Cloudflare experienced over 13.5 million DDoS attacks, primarily impacting its infrastructure and protected hosting providers.</li><li>The 7.3 Tbps attack sent 37.4 TB of data in 45 seconds, equivalent to streaming 9,350 HD movies or downloading 9.35 million songs.</li><li>The attack focused on a single IP, hitting an average of 21,925 ports per second and peaking at 34,517, with mainly UDP floods.</li><li>It originated from 122,145 IPs across 5,433 networks in 161 countries, with a significant portion from Brazil and Vietnam.</li><li>Cloudflare's system autonomously blocked the attack without human intervention, managing the traffic effectively.</li><li>The previous record DDoS attack blocked by Cloudflare was 5.6 Tbps, occurring in October 2024.</li></ul>

Cloudflare blocked record-breaking 7.3 Tbps DDoS attack against a hosting provider

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