Overview#Multiple-channel Authentication (MCA) is a method of Multi-Factor Authentication where one or more the Authentication Factors involved are communicated over separate communication channels or protocols.
The concept is that an Attacker would be challenged to determine:
- which channels are being used
- the timing differences of the separate channels would be more difficult to intercept
- requires knowledge on determining the weakness of each channel
Multiple-channel Authentication and Multi-Factor Authentication#Generally, Multiple-channel Authentication and Multi-Factor Authentication is stronger than either of the separate practices.
More Information#There might be more information for this subject on one of the following:
- Authentication Channel
- Authentication Method
- Authentication Method Reference Values
- Cross-platform Authentication
- Risk-Based Authentication
- SS7 hack
- What To Do About Passwords
- [#1] - A SUPPORT ARCHITECTURE FOR MULTICHANNEL, MULTIFACTOR AUTHENTICATION - based on information obtained 2017-07-03
- [#2] - Multi-channel, Multi-level Authentication for More Secure eBanking - based on information obtained 2017-07-03