Duo Security adds a second layer of security to your online Calvin accounts. Duo is required for all students, staff, faculty members, and sponsored account holders ...

Some browsers do not support all of Duo's authentication devices (for example, Security Keys won't work with Internet Explorer). For the widest compatibility with Duo's authentication methods, we ...

Cisco Systems has struck a deal to acquire Duo Security in a $2.35 billion cash deal that clears a new path for the networking behemoth into the market for unified access security and multifactor ...