Practice Quiz

CompTIA Security+ Exam Prep

Category - Security

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John is a Security Administrator at his organization. He is observing repeated unsuccessful attempts from a hacker to submit a Kerberos certificate and have it be validated by the authentication system. What is this attack called?
  1. Man-in-the-middle attack
  2. Back door attack
  3. Replay attack
  4. TCP/IP hijacking
Explanation
Answer - C - A replay attack attempts to replay the results of a previously successful session to gain access.

Key Takeaway: Replay attacks involve intercepting data packets and replaying them or resending them to the receiving server. Depending on the context, the hacker could benefit from the actual user's rights. In this case, the hacker is trying to re-use or replay the logon credentials of an authorized session.
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