A system looks stable until it does not. The dashboard is green. The architecture diagram is clean. The assessment package is complete. The controls are mapped, the evidence has been collected, and the responsible officials have enough documentation to conclude that the system can operate.
Then something happens that the diagram did not anticipate. A dependency changes behavior. A vendor service shifts its configuration. A data feed is interpreted differently downstream. A trusted identity source becomes a pathway for unintended reliance. Nothing appears to have failed in isolation, yet the system behaves in a way no one expected.
This is . . .
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