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304 · Question #109

Which APM feature helps protect credentials against replay attacks?

The correct answer is B. Secure Session ID. Secure Session ID (B) protects against replay attacks by generating a cryptographically unique, non-predictable session identifier for each authentication event. Because the session ID is invalidated after use or expiry, a captured token cannot be reused by an attacker…

Section 1: Implement APM for Access

Question

Which APM feature helps protect credentials against replay attacks?

Options

  • ACookie Encryption
  • BSecure Session ID
  • COne-Time Password
  • DCSRF Token

How the community answered

(42 responses)
  • A
    7% (3)
  • B
    88% (37)
  • C
    2% (1)
  • D
    2% (1)

Explanation

Secure Session ID (B) protects against replay attacks by generating a cryptographically unique, non-predictable session identifier for each authentication event. Because the session ID is invalidated after use or expiry, a captured token cannot be reused by an attacker - replaying it yields an expired or already-consumed session.

Cookie Encryption (A) is wrong because it only obscures cookie contents; an attacker can still capture and retransmit the full encrypted cookie without ever decrypting it - the server still accepts it.

One-Time Password (C) is a tempting choice since OTPs do prevent credential replay at the login stage, but within APM's feature set, it's Secure Session ID that specifically addresses post-authentication session-token replay, which is what this question targets.

CSRF Token (D) defends against Cross-Site Request Forgery - tricking a logged-in user's browser into making unauthorized requests - not against an attacker replaying stolen credentials or session tokens.

Memory tip: Think "replay = reuse of a session." A Secure Session ID makes each session ID a one-shot token at the session level - once it's used or expired, replaying it fails. Associate "secure session" with "can't reuse."

Topics

#Session Management#Replay Attack Prevention#Secure Session ID#Credential Protection

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