Advanced – Security Testing
TOTP – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
Time-based One-Time Password — a 6-digit code generated from a shared secret and the current time, used in MFA apps like Google Authenticator.
In simple words
The 6-digit rotating code from Google/Microsoft Authenticator apps.
Exam tip
TOTP (RFC 6238) is the standard behind most authenticator apps — 30-second windows.
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