On Saturday 25 May 2024 at 15:19 UTC, a credential stuffing targeted a electronics retail customer in the Benelux. The attack peaked at 79.6 million requests per second and lasted 12 minutes. Traffic originated from 727 autonomous systems in 88 countries, predominantly a rented booter service.
| Vector | credential stuffing |
| Peak | 79.6 million requests per second |
| Duration | 12 min |
| Time to mitigation | 0.648 s |
| Attack traffic reaching origin | 0.082% |
| Legitimate traffic challenged | 0.18% |
Timeline
The attack was preceded by no stated motive. Request rates on the targeted routes exceeded their hourly baseline by a factor of 588 within 36 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.
- Lower challenge thresholds on authentication endpoints during high-risk events.
- Enable log streaming to your SIEM for faster correlation.