Multi-factor authentication support for Office365 and access.caltech

IMSS is pleased to offer multi-factor authentication (MFA) using Duo Security for logins to Office365 and Sharepoint, as well as for access.caltech.   

Many campus users are already using Duo for extra security beyond just username and password when logging into certain campus resources, such as the Central HPC cluster. Administrative staff also use Duo to log into many other services, including Office 365.

If you would like to secure your logins to Office365 email, and/or logins to access.caltech with a hardware token or free smartphone app, submit a request at, request type IMSS > Information Security > Duo Request Form.

For more information, please visit