Collected research

Read Firefox Settings (PoC)

ha.ckers.org web application security lab

Sergey Vzloman's proof of concept redefines pref() then loads resource://gre/greprefs/security-prefs.js and all.js as scripts, dumping Firefox preference values into JavaScript for browser recon. RSnake added it to Mr. T. The dropped comment thread establishes it reads only shipped defaults, not user settings, and RSnake withdrew it.

Record

Document

ha.ckers.org web application security lab

Published by

ha.ckers.org

Topic

Browser

In the archive

• Collected in the 2007 research round

Related sources

• Mr. T reconnaissance

Tags

• info-leak
• javascript
• browser-fingerprinting
• detection
• dom
• 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 16 August 2026.