On Wednesday 22 October 2025 at 22:06 UTC, a HTTP GET flood targeted a developer platform customer in North America. The attack peaked at 887.1 million requests per second and lasted 168 minutes. Traffic originated from 1021 autonomous systems in 21 countries, predominantly hijacked home routers.
| Vector | HTTP GET flood |
| Peak | 887.1 million requests per second |
| Duration | 168 min |
| Time to mitigation | 0.230 s |
| Attack traffic reaching origin | 0.037% |
| Legitimate traffic challenged | 0.63% |
Timeline
The attack was preceded by no stated motive. Request rates on the targeted routes exceeded their hourly baseline by a factor of 813 within 6 seconds. The risk score of participating clients crossed the challenge threshold automatically and proof-of-work difficulty rose with origin load.
What the customer saw
A brief increase in p99 latency of 225 ms during the first minute, then normal service.
Recommendations
- Add a dedicated rate limit for the targeted route.
- Lower challenge thresholds on authentication endpoints during high-risk events.
- Enable authenticated origin pulls.