Disruptive cyber activity highlights risk from internet-exposed systems and edge devices Targeting of operational technology reinforces the need for organisations to understand what is exposed to the internet, address avoidable vulnerabilities, and build long-term cyber resilience. What has happened? The NCSC has seen increased targeting of operational technology (OT) systems across multiple sectors globally, including in the UK. This has been carried out by a range of threat actors and resulted in some limited real-world disruption. Any organisation that uses, deploys or maintains OT systems should treat this development seriously and review their security posture accordingly. Who is affected? Any organisation with internet-exposed OT could be affected by this activity. Organisations…