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Sniffing Browser History Without Javascript

Ergasiophobia alerts us to a somewhat alarming technology demonstration, in which a Web site you visit generates a pretty good list of sites you have visited — without requiring JavaScript. NoScript will not protect you here. The only obvious drawbacks to this method are that it puts a load on your browser, and that it requires a list of Web sites to check against. "It actually works pretty simply — it is simpler than the JavaScript implementation. All it does is load a page (in a hidden iframe) which contains lots of links. If a link is visited, a background (which isn't really a background) is loaded as defined in the CSS. The 'background' image will log the information, and then store it (and, in this case, it is displayed to you)."

7 of 216 comments (clear)

  1. Re:big issue is NoScript by bcrowell · · Score: 5, Insightful

    Stop overreacting, that is old news and long since fixed.

    Letting someone else's code run on my computer is an act of trust. Once they've shown they're untrustworthy, that's it, as far as I'm concerned. The world's best security software is no good if the author is someone who's demonstrated at least once that you can't trust him.

    NoScript is no more "malware" than Firefox itself.

    This is an interesting statement, but I don't understand your reasoning. Maybe you could explain more. Have the developers of Firefox done something untrustworthy?

    I'm sure you have more crapware and malware installed on your computer that you're blissfully unaware of than you care to admit,

    I don't understand how you know so much about my computer. Maybe you could explain more how you became so well informed about what's on my hard disk. I'm running Ubuntu. Are you aware of a lot of crapware that comes with a freshly installed Ubuntu system? Are you aware of a lot of malware that's been observed in the wild infecting Ubuntu systems? If so, I'd be very interested to hear about it.

  2. Re:big issue is NoScript by bcrowell · · Score: 5, Insightful

    It seems like it's been fixed.

    The issue isn't that the software had a bug that had to be fixed. The issue is that the author of the software has shown himself to be untrustworthy by making his software interfere with other software, for the purpose of increasing his own financial gain from ads.

  3. Re:For the Masses by MightyYar · · Score: 5, Insightful

    Most people will never understand and basic exploits like this will always work against them.

    So what, we shouldn't fix it then? The fix is dead-simple: the browser should load all "a:visited" images, regardless of whether or not it will display them.

    --
    W..w..W - Willy Waterloo washes Warren Wiggins who is washing Waldo Woo.
  4. Re:big issue is NoScript by Korin43 · · Score: 5, Insightful

    Easylist blocks ads. Easylist blocked an ad on his site. How is this their fault? They are doing exactly what they say they do.

  5. Re:OT: Re:big issue is NoScript by BrokenHalo · · Score: 5, Insightful

    the "no mod and comment" rule is perhaps one of the most ill-concieved rules I have seen.

    Then perhaps you haven't understood the concept behind the rule. The idea is to prevent individuals having unrestrained ability to push an agenda of their own: hence mod or post, but not both.

    Unlike some other long-standing rules on this forum, this is one that actually has very sound reasoning behind it.

  6. Re:big issue is NoScript by supernova_hq · · Score: 5, Insightful

    Don't confuse forgiveness with trust.

    If someone borrowed your car and backed into a telephone pole, you would be upset. If they paid for the damages, you would probably forgive them. But the question is: Would you trust them with your car..?

  7. Re:Old stuff by eiMichael · · Score: 5, Insightful

    Just make "visited" only apply within that domain, like a bastardized cookie. I don't care that us.gov knows which other us.gov links I've been to, but I don't want my browser reporting that I've also been to al-quada.org.