Bottom line: Isolate critical OT systems by March 31 to prevent potential cyber threats, as advised by US, UK, Australian, and Dutch governments.
What's happening: US Secretary of Defense Lloyd Austin, UK Minister for Digital Economy and Culture Nadine Dorries, Australian Minister for Cyber Security Paul Fletcher, and Dutch Minister of Economic Affairs and Climate Sander Dekker issued joint guidance to critical infrastructure operators to isolate their most important OT systems. This guidance aims to mitigate the risk of cyber threats to critical infrastructure, such as power grids, water treatment facilities, and transportation systems.
What to do: Critical infrastructure operators should review their OT system configurations and implement isolation measures by March 31 to ensure compliance with the joint guidance. Security teams should also conduct vulnerability assessments and penetration testing to identify and remediate potential weaknesses in OT systems.