A financial application encounters an unexpected error during transaction processing. Which secure design principle should be applied to ensure the system does not default to an insecure state?
Defense in depth
Least privilege
Secure defaults
Fail securely
'Fail securely' is the correct secure design principle to apply in this scenario. When a system encounters an error or failure condition, it should default to a secure state rather than an insecure one. In practice, this means that when the financial application encounters an unexpected error, it should reject transactions by default rather than accidentally approving them, maintain access restrictions rather than opening them, and preserve security controls even during failure modes.
Other options are incorrect because:
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