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active attack

Definitions:

  An attack on a secure communication protocol where the attacker transmits data to the claimant, Credential Service Provider (CSP), verifier, or Relying Party (RP). Examples of active attacks include man-in- the middle (MitM), impersonation, and session hijacking.
Sources:
CNSSI 4009-2015
NIST SP 800-161r1 from NIST SP 800-63-3 - adapted

  An attack on the authentication protocol where the attacker transmits data to the claimant, Credential Service Provider (CSP), verifier, or Relying Party (RP). Examples of active attacks include man-in-the-middle (MitM), impersonation, and session hijacking.
Sources:
NIST SP 800-63-3 under Active Attack