On Friday 7 August 2026 at 11:55 UTC, a UDP reflection (NTP) targeted a sports betting customer in the Nordics. The attack peaked at 59.3 Gbps and lasted 109 minutes. Traffic originated from 1255 autonomous systems in 56 countries, predominantly misconfigured open reflectors.
| Vector | UDP reflection (NTP) |
| Peak | 59.3 Gbps |
| Duration | 109 min |
| Time to mitigation | 0.884 s |
| Attack traffic reaching origin | 0.028% |
| Legitimate traffic challenged | 0.11% |
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 37 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.
- Keep origin IPs out of public DNS history.
- Lower challenge thresholds on authentication endpoints during high-risk events.
The billing model is what got our finance team on board, honestly.
We had the exact false-positive issue with CGNAT carriers. The weighting change makes sense.
Thanks — sharing this with our on-call team.
Thanks — sharing this with our on-call team.
Nice to read a vendor blog that admits what went wrong.
Great to hear, thanks for sharing your experience.