What is Cybersecurity (OT)?
OT Cybersecurity is the protection of industrial control systems and building automation systems against unauthorised access, disruption and manipulation – where availability takes priority over confidentiality because compromised systems have direct physical consequences.
Technical Definition: Protection of industrial control systems (ICS) and building automation systems against unauthorised access, disruption and manipulation. OT cybersecurity differs from IT security in that availability is the top priority – a compromised fire system or production stoppage has immediate physical consequences.
Why it matters: As facilities connect to the internet, the attack surface grows dramatically. Ransomware attacks that encrypt control systems, and intrusions that manipulate HVAC or access control, have become real and documented threats.
HubMind’s view: We use IEC 62443 as the technical requirements specification for OT security. Security must be designed in from the start – not added as an afterthought when a breach has already occurred.
Read more: When IT manages OT – security challenges explained.
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