On Wednesday 11 December 2024 at 15:39 UTC, a UDP reflection (DNS) targeted a gaming community customer in Iberia. The attack peaked at 216.8 Gbps and lasted 92 minutes. Traffic originated from 158 autonomous systems in 55 countries, predominantly residential proxy networks.
| Vector | UDP reflection (DNS) |
| Peak | 216.8 Gbps |
| Duration | 92 min |
| Time to mitigation | 0.641 s |
| Attack traffic reaching origin | 0.049% |
| Legitimate traffic challenged | 0.67% |
Timeline
The attack was preceded by a publicly announced sales event. Edge packet filters identified the flood by source port and payload signature and dropped it at line rate across 18 points of presence.
What the customer saw
The customer’s status page stayed green throughout; they learned about the attack from our notification.
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.