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NSA Offers OT Security Guidance in Wake of SolarWinds Attack
May 20, 2021
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May 4, 2021
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The U.S. National Security Agency is offering operational technology security guidance for the Defense Department as well as third-party military contractors and others in the wake of the SolarWinds supply chain attack.
In the warning, the NSA notes that a stand-alone, unconnected, or “islanded, OT system is safer from outside threats than one connected to an enterprise IT system with external connectivity. Each connection between an IT system and an isolated OT system increases the attack surface, so administrators should ensure only the most imperative IT-OT connections are allowed and that these are hardened to the greatest extent possible to prevent a possible attack.