On Thursday 27 November 2025 at 18:58 UTC, a memcached amplification targeted a tax authority portal customer in Southeast Asia. The attack peaked at 211.6 Gbps and lasted 93 minutes. Traffic originated from 4125 autonomous systems in 44 countries, predominantly a Mirai-derived IoT botnet.
| Vector | memcached amplification |
| Peak | 211.6 Gbps |
| Duration | 93 min |
| Time to mitigation | 0.286 s |
| Attack traffic reaching origin | 0.032% |
| Legitimate traffic challenged | 0.58% |
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 20 points of presence.
What the customer saw
No customer-visible impact. The on-call engineer was notified and acknowledged the incident from the dashboard.
Recommendations
- Add a dedicated rate limit for the targeted route.
- Enable log streaming to your SIEM for faster correlation.
- Enable authenticated origin pulls.