For those who are part of a team responsible for security on a web application, is there a reason why most sites don't allow users to choose their own challenge/security questions?
For those who are part of a team responsible for security on a web application, is there a reason why most sites don't allow users to choose their own challenge/security questions?
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Because security questions are an additional attack vector and should not be used at all. The dev-time is better invested in enforcement and encouragement of long & secure passwords and 2FA.
What would be your workflow for password reset? That is the typical use case for security questions.
Enter E-Mail -> Receive Reset-Link
I don't know, but it's bad practice that they do that. In my personal projects I've implemented individual defined security questions.