On Monday 25 April 2022 at 23:55 UTC, a UDP reflection (NTP) targeted a gaming community customer in the Middle East. The attack peaked at 75.2 Gbps and lasted 73 minutes. Traffic originated from 2364 autonomous systems in 84 countries, predominantly residential proxy networks.
| Vector | UDP reflection (NTP) |
| Peak | 75.2 Gbps |
| Duration | 73 min |
| Time to mitigation | 0.831 s |
| Attack traffic reaching origin | 0.053% |
| Legitimate traffic challenged | 0.01% |
Timeline
The attack was preceded by a competitor’s product launch. Edge packet filters identified the flood by source port and payload signature and dropped it at line rate across 21 points of presence.
What the customer saw
Checkout conversion was unchanged compared with the same hour of the previous week.
Recommendations
- Keep origin IPs out of public DNS history.
- Add a dedicated rate limit for the targeted route.
- Enable log streaming to your SIEM for faster correlation.