On Sunday 22 October 2023 at 09:57 UTC, a CLDAP reflection targeted a fashion retail customer in the Nordics. The attack peaked at 83.2 Gbps and lasted 104 minutes. Traffic originated from 1705 autonomous systems in 33 countries, predominantly a rented booter service.
| Vector | CLDAP reflection |
| Peak | 83.2 Gbps |
| Duration | 104 min |
| Time to mitigation | 0.161 s |
| Attack traffic reaching origin | 0.086% |
| Legitimate traffic challenged | 0.70% |
Timeline
The attack was preceded by a breaking political story. Edge packet filters identified the flood by source port and payload signature and dropped it at line rate across 19 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 log streaming to your SIEM for faster correlation.
- Add a dedicated rate limit for the targeted route.
- Keep origin IPs out of public DNS history.
How does the proof-of-work challenge behave on older Android devices? Any numbers below Android 10?
Any plans to support per-tenant limits keyed on a JWT claim?