On Friday 28 March 2025 at 07:00 UTC, a CLDAP reflection targeted a fashion retail customer in Western Europe. The attack peaked at 142.7 Gbps and lasted 45 minutes. Traffic originated from 3981 autonomous systems in 86 countries, predominantly hijacked home routers.
| Vector | CLDAP reflection |
| Peak | 142.7 Gbps |
| Duration | 45 min |
| Time to mitigation | 0.832 s |
| Attack traffic reaching origin | 0.082% |
| Legitimate traffic challenged | 0.42% |
Timeline
The attack was preceded by a ransom note demanding payment in Monero. Edge packet filters identified the flood by source port and payload signature and dropped it at line rate across 16 points of presence.
What the customer saw
The customer’s status page stayed green throughout; they learned about the attack from our notification.
Recommendations
- Enable authenticated origin pulls.
- Keep origin IPs out of public DNS history.
- Enable log streaming to your SIEM for faster correlation.