CCSP Cloud Application Security Practice Question
A cloud application uses a third-party identity provider (IdP) for SSO. The security team notices that tokens are being reused across different applications. Which token binding mechanism should be implemented?
⚠ Common exam trap
ISC2 often tests the distinction between token binding and audience restriction, where candidates mistakenly think audience restriction prevents reuse across applications, but audience restriction only limits which application can accept the token, not that the token is bound to a specific TLS session.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Token binding to TLS session
Token binding cryptographically ties an access token to a specific TLS session, preventing token export and replay across different applications. This directly addresses the reuse of tokens across applications by binding the token to the TLS layer, so even if an attacker intercepts the token, it cannot be used with a different TLS connection. RFC 8471 defines token binding for OAuth 2.0, ensuring the token is only valid when presented over the same TLS channel that was established during issuance.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use of bearer tokens without additional protection
Why it's wrong here
Bearer tokens are easily reusable.
- ✗
Short token expiration times
Why it's wrong here
Short expiration reduces but does not prevent reuse during validity.
- ✓
Token binding to TLS session
Why this is correct
Token binding ties the token to a specific TLS connection.
- ✗
Audience restriction
Why it's wrong here
Audience restricts which service can accept the token, not binding.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CCSP exam.