Security Models & Secure Design Practice Questions

One solved question, so you can see how these are marked

A payment service must continue protecting customer data when a dependent authorization service becomes unavailable. Which design decision BEST supports that requirement?

Fail securely by denying the protected transaction when the security decision cannot be made

Fail-secure behavior denies or limits access when a security control cannot operate, preserving the security requirement. Failing open weakens protection, a perimeter alone does not protect internal paths, and emergency administrator rights violate least privilege.

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