Each access to the network and to system components leaves a captured, protected audit trail. Level 1 (a and b): each audit trail entry records user identification, event type, date and time, success or failure, origination, and the data, component or resource affected; access to audit trails is restricted by physical and logical controls. Level 2 adds recording audit trails on write-once media or in a store built to resist tampering so entries cannot be altered; Level 3 is the same.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.