The 2025 Cloudflare Radar Year in Review- the rise of AI, post-quantum, and record-breaking DDoS attacks
Dec 15, 2025David Belson
Summary
This post introduces the 2025 Cloudflare Radar Year in Review, detailing observed Internet trends. Key contributions include data on global traffic growth, AI crawling patterns, post-quantum encryption adoption, connectivity metrics, and security threats. It also highlights new data sets for speed tests and DDoS attack sizes, and specific AI model usage on Workers AI.
More from the Data Infrastructure & Analytics trail
- Introducing Cloudflare Basin: an open, serverless data platform, now generally available
- Introducing the Billable Usage API: programmatic cost visibility for Cloudflare
- Announcing the Monetization Gateway: charge for any resource behind Cloudflare via x402
- How we built Cloudflare's data platform and an AI agent on top of it
- Iran's Internet is partially restored, Cloudflare Radar data shows