Threat Bulletin 1228: carpet-bombing UDP flood against a airline booking platform in the Benelux

On Thursday 6 November 2025 at 14:48 UTC, a carpet-bombing UDP flood targeted a airline booking customer in the Benelux. The attack peaked at 332.6 Gbps and lasted 68 minutes. Traffic originated from 1617 autonomous systems in 59 countries, predominantly residential proxy networks.

Vector carpet-bombing UDP flood
Peak 332.6 Gbps
Duration 68 min
Time to mitigation 0.801 s
Attack traffic reaching origin 0.021%
Legitimate traffic challenged 0.25%

Timeline

The attack was preceded by a ransom note demanding payment in Monero. Edge packet filters identified the flood by source port and payload signature and dropped it at line rate across 24 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

  • Enable log streaming to your SIEM for faster correlation.
  • Enable authenticated origin pulls.
  • Review allow-listed partner ranges quarterly.

8 thoughts on “Threat Bulletin 1228: carpet-bombing UDP flood against a airline booking platform in the Benelux”

  1. We moved from a scrubbing provider to always-on last year; time to mitigation went from minutes to basically nothing.

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