On Wednesday 28 January 2026 at 04:20 UTC, a Slowloris targeted a fashion retail customer in Central Europe. The attack peaked at 633.3 million requests per second and lasted 84 minutes. Traffic originated from 808 autonomous systems in 93 countries, predominantly compromised cloud VMs.
| Vector | Slowloris |
| Peak | 633.3 million requests per second |
| Duration | 84 min |
| Time to mitigation | 0.006 s |
| Attack traffic reaching origin | 0.087% |
| Legitimate traffic challenged | 0.44% |
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 465 within 23 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
The customer’s status page stayed green throughout; they learned about the attack from our notification.
Recommendations
- Lower challenge thresholds on authentication endpoints during high-risk events.
- Review allow-listed partner ranges quarterly.
- Keep origin IPs out of public DNS history.