# Serial Microsoft 0-day hunter drops yet another Defender exploit

DevFeed: [Serial Microsoft 0-day hunter drops yet another Defender exploit](<https://devfeed.tech/articles/serial-microsoft-0-day-hunter-drops-yet-another-defender-exploit-8560.md>)

Original publisher: [Read original article](<https://www.theregister.com/security/2026/09/09/serial-microsoft-0-day-hunter-drops-yet-another-defender-exploit/5295335>)

Author: Jessica Lyons

Published: 2026-09-09T17:23:00Z

Content type: news

Language: en

Sources: [www.theregister.com - Articles](<https://devfeed.tech/sources/www-theregister-com-articles.md>)

Topics: [Cybersecurity](<https://devfeed.tech/topics/cybersecurity.md>), [Microsoft](<https://devfeed.tech/topics/microsoft.md>)

Tags: [cybersecurity](<https://devfeed.tech/tags/cybersecurity.md>), [defender](<https://devfeed.tech/tags/defender.md>), [microsoft](<https://devfeed.tech/tags/microsoft.md>), [security](<https://devfeed.tech/tags/security.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>), [windows](<https://devfeed.tech/tags/windows.md>)

## AI overview

The article reports another Microsoft Defender exploit, characterized as a bypass of prior bypasses.

## Source excerpt

A bypass of a bypass of a bypass