Collected research

Detecting Default Browser in IE

ha.ckers.org web application security lab - Archive » Detecting Default Browser in IE

A snippet from the handle unsticky uses IE's mimeType reporting to identify the visitor's DEFAULT browser, not merely the one in use, detecting Firefox and Opera reliably. Netscape in IE mode is a known false positive, and Netscape would likely read as Firefox because of the shared Gecko engine.

Record

Document

ha.ckers.org web application security lab - Archive » Detecting Default Browser in IE

Published by

ha.ckers.org

Topic

Browser

In the archive

• Collected in the 2007 research round

Tags

• browser-fingerprinting
• info-leak
• javascript
• 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 17 August 2026.