Out-of-Band Channel

Definitions

1. A separate communication path used for verification, recovery, or coordination outside the primary channel being protected or monitored. Out-of-band channels are used for MFA, incident coordination, secret exchange, and fraud prevention because compromise of one path does not automatically imply compromise of the other.

   In plain English: A separate communication route used to verify or coordinate something more safely.

   Example: "The responder confirmed the wire change request over an out-of-band channel instead of trusting the email thread alone."

Related Terms

• JWT
• Access Token
• Account Lockout
• Authentication Factor
• Authentication Protocol
• Brute Force Protection
• Challenge Token
• Identity Verification