Cloudflare DDoS Threat Report H1 2026: 1 Tbps attacks soar as DNS floods and geopolitical tensions drive a new wave

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Welcome to the 25th edition of Cloudflare's DDoS Threat Report. This is the first half-year edition in the series: rather than publishing separate reports for the first and second quarters of 2026, we have combined our coverage of Q1 and Q2 into a single volume covering January through June 2026. The analysis is produced by Cloudforce One, Cloudflare’s Threat Intelligence organization, providing a comprehensive analysis of the evolving threat landscape of Distributed Denial of Service (DDoS) attacks based on data from the Cloudflare network.Key insightsThe 1 Tbps club grew. Cloudflare mitigated a combined 935 network-layer DDoS attacks exceeding 1 Tbps in the first half of 2026 and a +519% quarter-over-quarter surge between Q1 and Q2. The attack-vector center of gravity shifted from botnet floods to reflection and amplification. DNS-based attacks accounted for 34.3% of all network-layer activity in the first half of 2026, with DNS Floods alone climbing from 25.7% to 40.0% of network-layer attacks quarter-over-quarter. CLDAP Floods surged +580% quarter-over-quarter to become the #3 vector in Q2.Geopolitics and global events influence the landscape. Media, Production & Publishing held the #1 most-attacked industry crown in both quarters at 14.2% of all mitigated HTTP DDoS requests as coverage of Iran, Ukraine, and the World Cup drew sustained attention. In parallel, Turkey rose to the #3 most-attacked country amid the backdrop of the July NATO Summit in Ankara, and the Government sector jumped from #29 to #9 — the largest single sector movement of 2026 to date — during …

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