OT Cybersecurity Best Practices for SMBs: How to Remediate External OT Network Connections to the Internet
Summary: Dragos OT-CERT's monthly SMB guidance states that the easiest path for intruders and malware into an OT network is through ICS/OT assets exposed directly to the internet, and that direct internet connections from OT are a common finding in its risk assessments even at larger organizations. The post notes many organizations believe their OT environment is air-gapped, but few really are, and recommends sitting at each HMI, engineering workstation, and other Windows asset in the plant to check whether it is connected.
Bottom line: The assumption of an air gap is the vulnerability: Dragos says exposed OT assets are the easiest route in, and it finds direct internet connections even in larger organizations, so the SMB that never checks its HMIs and engineering workstations is trusting a belief rather than a verified fact.
Read the original at Dragos Blog ↗
- Topics
- OT / ICS & Critical Infrastructure
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