Dev Tools · 2h ago
Fail-open vs fail-closed: the default that shapes your app's security
The article explains the security engineering concept of fail-open vs fail-closed using a door analogy. It shows how a bug in error handling can inadvertently create a security hole. Developers must consciously choose the default behavior when authentication or authorization fails.
Meridian48 take
A clear, practical reminder that security defaults are design decisions, not afterthoughts — but the article could have included more real-world breach examples.
Read the full reporting
Fail-open vs fail-closed: the security decision you make without realizing it →
DEV Community
fail-openfail-closed