<em>LockDown Browser® is a custom browser that locks down the testing environment within Blackboard, ANGEL, Brightspace by D2L, Canvas, Moodle, and Sakai. When students use LockDown Browser they are unable to print, copy, go to another URL, or access other applications. When an assessment is started, students are locked into it until they submit it for grading. Available for Windows, Mac and iOS[sic].</em>

=== <s> Features </s> Bugs ===

executed on the fly, to add the "Lock Down" features, however it currently appears to be a stand-alone browser with some resemblance to Google's Chrome. On both OS X and Windows, it is based off of the open-source Chromium<ref>http://respondus.com/products/lockdown-browser/requirements.shtml</ref>, although previous OS X versions arebelieved to have piggybacked off of Safari features. On Windows, the running user must have administrative privileges to run the student edition, however administrative privileges are not necessary to run the browser on OS X. A version for iOS (iPad-only) is also available, as well as a version for centrally managed Chromebooks for education (k-12). == Analysis ==Only cursory analysis has been done thus far, as the author of this article doesn't have a native windows box to run Respondus on. It appears that on launch, it first connects to an unencrypted http server running in AWS, presumably to check if the version is current, then it checks if it is in a virtualized environment.

On Mac OS X==Other Notes=====Actual Bugs===* No support for U2F -- requires second (expensive) device for other [[gp:2FA|2 Factor Authentication]] methods* Easily circumvented** Most students have second computer (i.e. Smartphone), it requires that <em>The Safari browser must which can be configured to the minimum requirements used for the Learning Management System being used</em>cheating (i.e. Google searching)** Circumvention methods disadvantage students of lower income,who do not have second device.* No Linux version, disadvantaging students promoting the use of <refb>http://respondus.com/products/lockdown-browser/requirements.shtmlfree software</refb>indicating that it piggybacks off * Does not prevent collaboration in out-of Safari features-class testing* Superfluous for in-class testing, although it is unknown if it requires where students are visually monitored anyway** At most just promotes lazy proctoring of exams* Cannot take multiple tests within a single session* Requires administrative privileges which may not be available on Mac OS X.multi-user machines* Hostile to users of password managers

=== Open questions on debugging ===* Is a TLS cert chain bundled, or can it be MITMed?* What kind of protocol does it use to authenticate that it is respondus** A version for iOS (iPadKerberos-like protocol would be optimal, but I'd be surprised if they did it* Does the binary do any integrity checks?* Does qemu-only) is also available.emulated devices adequately obfuscate that it runs in a VM? Doesn't seem to