This page will allow you to enroll in MIT's Duo Security two-factor authentication system, and to manage your existing account settings.
Two-factor authentication provides additional security by requiring both something you know (your username and password), and something you have (such as a cell phone, hardware token, and/or landline) any time you authenticate to a Duo-enabled system.
By turning on Duo Two Factor authentication, you can protect your MIT identity, and make sure no one else can act on your behalf with certain services, even if your password has been compromised.
For more information, please consult the IS&T Knowledge Base.