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Re: Browser fingerprinting?

From Denis McMahon <denismfmcmahon@gmail.com>
Newsgroups comp.lang.php
Subject Re: Browser fingerprinting?
Date 2013-09-12 23:29 +0000
Organization A noiseless patient Spider
Message-ID <l0tioa$evt$1@dont-email.me> (permalink)
References <9sd439tbmqhqgqice5psd6nd3018rcr5v6@4ax.com> <l0tf36$uif$1@dont-email.me> <4jg439554kfepp75hhqndq30g91p7s3f6k@4ax.com> <hsg4391qps5u2r2n40gfucfjp2g99g215u@4ax.com>

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On Fri, 13 Sep 2013 00:43:49 +0200, Gilles wrote:

> I'll experiment with eg. "md5(implode('',$_SERVER));" and see how it
> goes.

Comparing md5s of anything that contains timestamps is unlikely to match 
across multiple checks.

Comparing md5s of anything that contains remote ports is unlikely to 
match across multiple browser sessions.

Comparing md5s of anything that contains remote ip addresses is unlikely 
to uniquely identify any sort of malicious user using proxies / tor etc.

Note - it's a lot easier to work out what won't work than to work out 
what will.

-- 
Denis McMahon, denismfmcmahon@gmail.com

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Thread

Browser fingerprinting? Gilles <nospam@nospam.com> - 2013-09-12 23:56 +0200
  Re: Browser fingerprinting? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-12 22:26 +0000
    Re: Browser fingerprinting? Gilles <nospam@nospam.com> - 2013-09-13 00:38 +0200
      Re: Browser fingerprinting? Gilles <nospam@nospam.com> - 2013-09-13 00:43 +0200
        Re: Browser fingerprinting? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-12 23:29 +0000
          Re: Browser fingerprinting? Gilles <nospam@nospam.com> - 2013-09-13 09:23 +0200
            Re: Browser fingerprinting? Jerry Stuckle <jstucklex@attglobal.net> - 2013-09-13 09:32 -0400
    Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-13 19:13 -0400
      Re: Browser fingerprinting? Christoph Michael Becker <cmbecker69@arcor.de> - 2013-09-14 01:30 +0200
  Re: Browser fingerprinting? jimp@specsol.spam.sux.com - 2013-09-12 22:19 +0000
  Re: Browser fingerprinting? Jerry Stuckle <jstucklex@attglobal.net> - 2013-09-12 20:31 -0400
    Re: Browser fingerprinting? "J.O. Aho" <user@example.net> - 2013-09-13 06:59 +0200
  Re: Browser fingerprinting? Fiver <numeralfive@gmail.com> - 2013-09-13 05:04 +0200
    Re: Browser fingerprinting? Michael Vilain <vilain@NOspamcop.net> - 2013-09-12 22:49 -0700
      Re: Browser fingerprinting? Jerry Stuckle <jstucklex@attglobal.net> - 2013-09-13 09:35 -0400
      Re: Browser fingerprinting? Martin Leese <please@see.Web.for.e-mail.INVALID> - 2013-09-13 08:42 -0600
      Re: Browser fingerprinting? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2013-09-15 20:57 +0200
    Re: Browser fingerprinting? Gilles <nospam@nospam.com> - 2013-09-13 09:22 +0200
      Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-13 19:30 -0400
        Re: Browser fingerprinting? Gilles <nospam@nospam.com> - 2013-09-15 00:11 +0200
          Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-15 16:27 -0400
            Re: Browser fingerprinting? "Peter H. Coffin" <hellsop@ninehells.com> - 2013-09-15 21:07 -0500
            Re: Browser fingerprinting? Gregor Kofler <usenet@gregorkofler.com> - 2013-09-16 11:36 +0200
              Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-17 20:02 -0400
                Re: Browser fingerprinting? "Peter H. Coffin" <hellsop@ninehells.com> - 2013-09-17 22:47 -0500
            Re: Browser fingerprinting? Norman Peelman <npeelman@cfl.rr.com> - 2013-09-16 06:13 -0400
              Re: Browser fingerprinting? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-16 11:03 +0000
                Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-17 20:11 -0400
              Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-17 20:06 -0400
                Re: Browser fingerprinting? The Natural Philosopher <tnp@invalid.invalid> - 2013-09-18 01:33 +0100
          Re: Browser fingerprinting? Marc van Lieshout <invalid@example.com> - 2013-09-17 22:53 +0200
            Re: Browser fingerprinting? Twayne <nobody@spamcop.net> - 2013-09-17 20:20 -0400
            Re: Browser fingerprinting? Denis McMahon <denismfmcmahon@gmail.com> - 2013-09-18 05:06 +0000
              Re: Browser fingerprinting? Scott Johnson <noonehome@chalupasworld.com> - 2013-09-18 06:09 -0700
                Re: Browser fingerprinting? "J.O. Aho" <user@example.net> - 2013-09-18 18:24 +0200

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