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I remember there is a TOCTOU-related vulnerability, where one should never default the access of a user to true and set to false if something goes wrong, but default it to false and set it to true only if everything goes right. However, I dont remember the precise vulnerability or the antipattern name. If some help to point those details could be provided, I would be really grateful.

Background: I'm in a team trying to justify why we need to default the validation functions to false instead of to true (although it sounds obvious, I want to give solid justification)

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  • Fail-unsafe? Default-allow?
    – ThoriumBR
    Commented Sep 25, 2019 at 19:59

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