GSLC-2020: GIAC Security LeadershipDemo

By GIAC · Question Mode

QuestionQ336

Managing Encryption and Privacy

Which of the following are countermeasures against a man-in-the-middle attack?

Each correct answer represents a complete solution. Choose all that apply.

Choose three
  • A Using Off-channel verification.
  • B Using Secret keys for authentication.
  • C Using basic authentication.
  • D Using public key infrastructure authentication.
Explanation

Man-in-the-middle attacks are prevented by reliable peer authentication or an independent verification channel. Off-channel verification can confirm identity separately from the potentially intercepted channel; secret-key authentication can authenticate parties using a shared secret; and PKI authentication validates identities through certified public keys. Basic authentication alone does not provide a complete defense against interception or impersonation.

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