DDoS

Understanding the Recent DDoS Attack Against Read the Docs

Read the Docs describes a ten-day DDoS attack in June 2026 that peaked at 5.5 million requests per minute, roughly 100 times normal traffic. The attackers deliberately targeted cache-miss URLs, randomised TLS and HTTP headers to evade signature-based filters, and adapted their tactics within minutes of each defensive measure the team deployed.

Blog post · DDoS · Security · Infrastructure · Cloudflare