Blackboard (Students) - About LockDown Browser
LockDown Browser is a custom browser that provides a secure testing environment within Blackboard. LockDown Browser prevents students from opening other browsers or web pages, disables copy/paste/print functions, and limits access to other computer applications. When LockDown Browser is enabled on a course assessment, students cannot open the assessment with any other browser (i.e. Chrome, Firefox, Safari). See these steps for how to download LockDown Browser from Blackboard.
This article describes LockDown Browser.