# Undersea cables & GPS — WATCH (stable)
id cables-gnss · Technology & Cyber · horizon acute · checked 2026-11-01T11:52Z · at this level since 2026-10-31T11:26Z · stale after 2026-11-02T23:52Z
Assessed by an AI model (Anthropic Claude) against published rubrics; not a forecast or advice · CC BY 4.0 · https://canary.danleech.com/s/cables-gnss

Value: Asia cable faults; Gulf/Baltic GNSS jamming
Rated on: Cable damage incident, or widespread GNSS interference affecting aviation.

Asian subsea cable cuts and widespread GPS jamming

Why it's at this level: A subsea link between the Philippines and Singapore, plus a link to Hong Kong, failed on 2 Oct with repairs expected to take weeks, and two cables off Perth were damaged after suspicious vessel activity. GNSS jamming remains widespread in the Gulf and Baltic. No new cable cut was reported to 1 Nov.

What this means for you: Most users see little effect thanks to rerouting, but jamming is a growing hazard for aviation and shipping.

Why it matters: Subsea cables carry ~99% of intercontinental data; GPS jamming affects aviation and shipping.
What moves it: Anchor drags, sabotage, conflict-zone jamming and spoofing.

Rubric — Alert: Multiple cable cuts isolating a region, or confirmed sabotage. | Watch: Cable damage incident, or widespread GNSS interference affecting aviation. | Normal: No new cable cuts or major jamming escalations.

Sources:
- Filipinos.sg — Philippines–Singapore subsea cable cut (2026-10-03) https://www.filipinos.sg/article/philippines-singapore-subsea-cable-cut-slow-internet-october-2026
- Hellenic Shipping News — GPS jamming now a mainstream maritime threat (2026-10-01) https://www.hellenicshippingnews.com/gps-jamming-is-now-a-mainstream-maritime-threat-what-changed-between-2025-and-2026/