On Thursday 12 February 2026 at 14:59 UTC, a Slowloris targeted a ticketing customer in the UK. The attack peaked at 135.4 million requests per second and lasted 3 minutes. Traffic originated from 220 autonomous systems in 77 countries, predominantly misconfigured open reflectors.
| Vector | Slowloris |
| Peak | 135.4 million requests per second |
| Duration | 3 min |
| Time to mitigation | 0.125 s |
| Attack traffic reaching origin | 0.025% |
| Legitimate traffic challenged | 0.39% |
Timeline
The attack was preceded by a breaking political story. Request rates on the targeted routes exceeded their hourly baseline by a factor of 573 within 27 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
- Review allow-listed partner ranges quarterly.
- Keep origin IPs out of public DNS history.
- Enable log streaming to your SIEM for faster correlation.