On Sunday 10 August 2025 at 02:11 UTC, a Slowloris targeted a gaming community customer in Central Europe. The attack peaked at 319.5 million requests per second and lasted 154 minutes. Traffic originated from 2889 autonomous systems in 42 countries, predominantly a rented booter service.
| Vector | Slowloris |
| Peak | 319.5 million requests per second |
| Duration | 154 min |
| Time to mitigation | 0.691 s |
| Attack traffic reaching origin | 0.083% |
| Legitimate traffic challenged | 0.07% |
Timeline
The attack was preceded by a publicly announced sales event. Request rates on the targeted routes exceeded their hourly baseline by a factor of 156 within 16 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
Checkout conversion was unchanged compared with the same hour of the previous week.
Recommendations
- Add a dedicated rate limit for the targeted route.
- Keep origin IPs out of public DNS history.
- Enable log streaming to your SIEM for faster correlation.
Carpet bombing is nasty. Good to see a clear explanation of it.
Could you share the dataset behind the percentages?
Machine-readable ranges are at /ips.json and via the API.