On Saturday 3 February 2024 at 21:33 UTC, a UDP reflection (NTP) targeted a sports betting customer in Iberia. The attack peaked at 102.4 Gbps and lasted 40 minutes. Traffic originated from 1383 autonomous systems in 39 countries, predominantly a headless-browser farm.
| Vector | UDP reflection (NTP) |
| Peak | 102.4 Gbps |
| Duration | 40 min |
| Time to mitigation | 0.840 s |
| Attack traffic reaching origin | 0.002% |
| Legitimate traffic challenged | 0.40% |
Timeline
The attack was preceded by no stated motive. Edge packet filters identified the flood by source port and payload signature and dropped it at line rate across 29 points of presence.
What the customer saw
No customer-visible impact. The on-call engineer was notified and acknowledged the incident from the dashboard.
Recommendations
- Review allow-listed partner ranges quarterly.
- Lower challenge thresholds on authentication endpoints during high-risk events.
- Add a dedicated rate limit for the targeted route.