On Monday 6 October 2025 at 17:14 UTC, a CLDAP reflection targeted a ticketing customer in the UK. The attack peaked at 264.4 Gbps and lasted 100 minutes. Traffic originated from 3716 autonomous systems in 92 countries, predominantly hijacked home routers.
| Vector | CLDAP reflection |
| Peak | 264.4 Gbps |
| Duration | 100 min |
| Time to mitigation | 0.300 s |
| Attack traffic reaching origin | 0.027% |
| Legitimate traffic challenged | 0.34% |
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 13 points of presence.
What the customer saw
A brief increase in p99 latency of 193 ms during the first minute, then normal service.
Recommendations
- Keep origin IPs out of public DNS history.
- Add a dedicated rate limit for the targeted route.
- Lower challenge thresholds on authentication endpoints during high-risk events.