quickfox

The quickfox tag on WindowsForum.com covers security and troubleshooting discussions about the QuickFox application on Windows, with a focus on the 2025 supply-chain attack disclosed by FortiGuard Labs. Affected QuickFox versions from the 2025 release window were trojanized with the modular FDMTP backdoor, meaning any installation during that period should be treated as a potential endpoint compromise. Practical guidance includes removing the affected client, hunting for persistence mechanisms and outbound traffic, and rotating credentials or secrets that may have been exposed. The tag serves as a resource for Windows users seeking to identify affected builds and respond to this specific threat.