Submarine cable incident record

Red Sea cable incident — Confirmed — 2025-09-10

Event ID evt_hist_f49422a4f50447ce ·

Microsoft reports elevated Azure latency after multiple Red Sea undersea cable cuts, with traffic rerouted.

Confirmed

Public classification
Confirmed
Affected cable or system
Confirmed regional incident; no cable was deterministically attributed
Affected countries
Not identified in the published evidence
Region
Red Sea
Network state
Network signal stale
Physical state
Physical fault confirmed by report

Lifecycle

  • Occurred:
  • Network record became stale: — physical state unchanged.

Original supporting evidence

  1. users of its Azure cloud platform are experiencing increased latency following the severing of multiple undersea fiber optic cables in the Red Sea. subtelforum.com · 2025-09-10T12:00:11.000Z

Public-network measurements can support a Suspected record but cannot prove a physical cable fault or repair. Network recovery can result from rerouting and does not establish physical repair. Confirm operational decisions with the cable owner or carrier.

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