On Friday 14 March 2025 at 09:52 UTC, a CLDAP reflection targeted a education platform customer in Latin America. The attack peaked at 307.4 Gbps and lasted 165 minutes. Traffic originated from 1208 autonomous systems in 82 countries, predominantly a Mirai-derived IoT botnet.
| Vector | CLDAP reflection |
| Peak | 307.4 Gbps |
| Duration | 165 min |
| Time to mitigation | 0.538 s |
| Attack traffic reaching origin | 0.083% |
| Legitimate traffic challenged | 0.59% |
Timeline
The attack was preceded by a hacktivist channel announcing the target. 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
Checkout conversion was unchanged compared with the same hour of the previous week.
Recommendations
- Enable log streaming to your SIEM for faster correlation.
- Lower challenge thresholds on authentication endpoints during high-risk events.
- Review allow-listed partner ranges quarterly.
The point about origin IPs leaking through certificate transparency logs is underrated.