https://peertube.eqver.se/videos/watch/b1a6a5b0-a222-4d64-ac35-9b0c282939f0 A DEF CON 31 talk on a 0-day vulnerability in the Windows Defender signature update mechanism. The researcher shows how, with standard user privileges, an attacker can intercept the update process and take full control of Defender. The tool Defender-Pretender demonstrates how to disable protections, execute malware without detection, and even force Defender to delete system files, rendering the system unusable. Fri, 24 Jul 2026 11:24:32 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://peertube.eqver.se https://peertube.eqver.se/client/assets/images/icons/icon-512x512.png https://peertube.eqver.se/videos/watch/b1a6a5b0-a222-4d64-ac35-9b0c282939f0 All rights reserved, unless otherwise specified in the terms specified at https://peertube.eqver.se/about and potential licenses granted by each content's rightholder.