Mozilla Firefox 23 is a web browser developed by Mozilla Foundation , available for download in full install version for Windows platforms from legacy sources. This version of Firefox was officially released on 2013-08-06 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Firefox 23 is released with key security add on to make browsing more secure while accessing HTTPS pages. Popularly called man-in-the-middle attacks, this loophole let eavesdroppers to grab key personal data through HTTPS pages.

Changes in this edition include H.264 video decoding acceleration, Firefox logo updation, auto image loading, enforcement of CSP policies, User interface memory consumption improvement and removal of "Enable JavaScript" check box. This edition comes with an unfixed issue of Firefox startup crash during locked profile.