MEDIUMApt
Verified
Australia

Australia Cyber Security Centre Warns of Attacks on Critical Infrastructure OT Networks

Sunday, March 1, 2026 at 02:00 AM UTC·Source: ACSC

Updated: Monday, March 2, 2026 at 06:00 AM UTC

Executive Summary

ACSC issues urgent advisory on increased targeting of Australian critical infrastructure OT networks by state-sponsored actors.

Analysis

The Australian Cyber Security Centre has issued an urgent advisory warning of increased targeting of operational technology networks in Australian critical infrastructure by state-sponsored actors. The advisory covers water treatment, electricity generation, and port operations. ACSC has observed reconnaissance activity and initial access attempts using internet-exposed OT devices and VPN appliances. Organizations are urged to implement network segmentation and conduct OT security assessments.

Timeline

Discovered
Feb 15, 2026
Published
Mar 1, 2026
Source Attribution

Originally published by ACSC on Mar 1, 2026. Verified by: ACSC, Five Eyes.

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