Two damaged undersea cables off the coast of Perth are being repaired this week, and businesses relying on affected routes may notice slower or less reliable connections during the works.

• What happened: The INDIGO West and INDIGO Central submarine cables suffered shunt faults off Perth in early August, inside a protected cable zone where anchoring has been banned since 2007. The AFP is assessing a report in connection with the damage.
• What is happening now: The subsea provider is carrying out repair works between 10 and 18 September 2026, with traffic between Perth and Sydney rerouted via alternate terrestrial paths for the duration.
• Who is affected: Businesses with services routed via these cable systems, particularly in Western Australia, may see increased latency or reduced throughput, especially for international traffic.
• What to do: No action is required for most businesses, but if you run latency-sensitive services such as VoIP, video conferencing or cloud backups with a WA presence, it is worth keeping an eye on performance this week.

We recommend treating incidents like this as a reminder that even national-level connectivity has single points of failure worth planning around.