A purchasing decision for operators
The UK National Cyber Security Centre launched its Cyber Adversary Simulation scheme on November 11, giving critical organisations a list of suppliers assessed against a common standard. Regulators and lead government departments helped develop the scheme. The NCSC says it will initially operate on a limited basis while it tests demand and refines the methodology. The assurance applies to the firm conducting an exercise. The operator commissioning it still has to establish what the exercise demonstrated about its own service.
From a control inventory to an observed decision
The NCSC describes a test tailored to the customer and organised around agreed objectives. For an electricity utility, a meaningful objective might be whether a security alert about access to an operational system reaches the person authorised to restrict it. An inventory can establish that both monitoring and access controls exist. An exercise can establish whether the right people had enough information to make that decision within the time available. That example illustrates a possible commissioning choice. The announcement identifies no participating utility or test outcome.
What an oversight body can compare
The agency places the new scheme alongside its Cyber Assessment Framework and Cyber Resilience Audit scheme. A shared provider standard gives a regulator a more consistent basis for asking how evidence was collected across operators. The scope agreed for each test still matters. Two exercises can meet the same supplier standard while examining quite different services, escalation paths and consequences of interruption.
Sources & further reading
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