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How would you test password reset abuse and token security?

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Scenario

Your interview prompt

A customer portal lets users request a password reset email. Reset links expire after 30 minutes, can only be used once, and should invalidate active sessions after a successful password change.

List flows, risks, edge cases, data conditions, UX, security, API/backend, and performance concerns.

Tip: a stronger answer usually mixes happy path, negative cases, state changes, data, backend, UX, accessibility, and risk.

How to structure your answer

Happy pathNegative casesData rulesSecurity/API risksUX/performance