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title: "I still know where you've been, without JavaScript"
description: "Points at RSnake's rework of CSS history stealing that needs no JavaScript: rather than reading link colour from script, the a:visited rule drives a display: property so the browser itself requests a per-link resource, leaking the visit to the server. Notes SafeHistory as partial mitigation and pdp's improved proof of concept."
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# I still know where you've been, without JavaScript

**I still know where you've been, without JavaScript** - Jeremiah Grossman, blog.jeremiahgrossman.com.

- Published: date not stated
- Original: <https://jeremiahgrossman.blogspot.com/2007/03/i-still-know-where-youve-been-without.html>
- Current location: <https://blog.jeremiahgrossman.com/2007/03/i-still-know-where-youve-been-without.html>
- Preserved from: https://blog.jeremiahgrossman.com/2007/03/i-still-know-where-youve-been-without.html (stored) on 2026-08-11
- Licence: unknown

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## Content

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Jeremiah Grossman: I still know where you've been, without JavaScript

###  I still know where you've been, without JavaScript

 Looks like RSnake has [one-upped me](http://ha.ckers.org/blog/20070228/steal-browser-history-without-javascript/) with his new [CSS History Hack Without JavaScript](http://ha.ckers.org/weird/CSS-history.cgi) (PoC). The hack still relies up the a:visited component of CSS, but instead of using JavaScript to check link color, he uses the display: property to create the conditional logic required. Nice! This is mitigated in many ways by SafeHistory (Firefox), but again, your not protected by turning off JavaScript. Great. In classic pdp fashion, he quickly improved upon the PoC with [his own version](http://www.gnucitizen.org/projects/noscript-hscan/). Good stuff.