Fail-open vs fail-closed: the security decision you make without realizing it
Article summary
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If you build software long enough, you eventually ship a bug that isn't a typo or a logic error — it's a default . Specifically, it's the answer to a question nobody asked out loud: "What happens when this check fails?" That question has a name in security engineering: fail-open vs fail-closed . The door analogy Picture a badge-controlled office door. Normally you need a card to get in. Then the power dies and the lock controller crashes. In that instant the door has to "decide": swing open so…
1Key Takeaways
- If you build software long enough, you eventually ship a bug that isn't a typo or a logic error — it's a default .
- Specifically, it's the answer to a question nobody asked out loud: "What happens when this check fails?" That question has a name in security engineering: fail-open vs fail-closed .
- The door analogy Picture a badge-controlled office door.
- Then the power dies and the lock controller crashes.
2AIWedia Score
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. DEV — AI reports that if you build software long enough, you eventually ship a bug that isn't a typo or a logic error — it's a default .
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