Collected research

Detecting FireFox Extentions

ha.ckers.org web application security lab

Firefox maps installed extensions' images under chrome:// URLs, so a page can load them and learn which extensions a visitor runs. Naming is per-extension rather than standard, so the post publishes a mapped list and a live demo. The result fingerprints the user and reveals which plugin weaknesses, such as the IE Tab engine switch, can be attacked.

Record

Document

ha.ckers.org web application security lab

Published by

ha.ckers.org

Topic

Browser

In the archive

• Collected in the 2006 research round

Tags

• browser-extension
• browser-fingerprinting
• detection
• info-leak
• javascript
• owasp-a09-2021

This page is the archive's own catalogue record. The research is the work of ha.ckers.org, first published at the original source. Preserved copies are kept so the citation survives its host; this one was last captured on 9 August 2026.