Safe Exam Browser is a locked-down browser environment for online examinations, developed and maintained by ETH Zurich IT Services. The software temporarily turns an examination computer or tablet into a secure workstation: it blocks system functions, other websites and applications, and displays only the exam page of the learning management system. It runs on Windows, macOS and iOS and works with Moodle, ILIAS, OpenOlat, Open edX and Canvas, as well as other web-based e-assessment systems.
SEB does not send personal data to a central server and is not connected to web analytics or tracking services; it is not a cloud service. The institution decides where exam content is stored, usually in its own learning management system, and the optional SEB Server component can be installed on self-operated servers. The software is released under the Mozilla Public License, but the Windows version includes a binary security module that is not open source. For European institutions this means a client developed in Switzerland with no vendor cloud behind it, and control over exam data stays with the institution.