On Monday 2 March 2026 at 06:34 UTC, a SYN flood targeted a healthcare portal customer in Iberia. The attack peaked at 83.1 Gbps and lasted 86 minutes. Traffic originated from 3510 autonomous systems in 111 countries, predominantly residential proxy networks.
| Vector | SYN flood |
| Peak | 83.1 Gbps |
| Duration | 86 min |
| Time to mitigation | 0.582 s |
| Attack traffic reaching origin | 0.072% |
| Legitimate traffic challenged | 0.50% |
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 21 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.
- Lower challenge thresholds on authentication endpoints during high-risk events.
- Add a dedicated rate limit for the targeted route.