The Canada Revenue Agency (CRA) is introducing a Multi-factor authentication (MFA) process to enhance the security of its online services and ensure the safety and protection of taxpayer information. When enrolled, the user logging in to CRA login services will receive a one-time passcode by text message or telephone call, which will need to be entered in order to continue the login process. As part of the EFILE community, you will be asked to enroll in MFA before gaining access to online services in the future.

Click the link for details:

https://www.canada.ca/en/revenue-agency/services/e-services/cra-login-services/multi-factor-authentication-access-cra-login-services.html