full-disclosure - Re: Facebook seems to think my Arch Linux box has malware on it

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Date: Fri, 20 Jan 2012 16:18:49 -0500
From: Wesley Kerfoot <wjak56@...il.com>
To: Byron Sonne <byron.sonne@...il.com>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Facebook seems to think my Arch Linux box has
 malware on it

It turns out that it was a problem with firefox. However, I do not believe
I had any malicious addons or extensions for a few reasons. 1) I only had 4
extensions, adblock plus, pentadactyl, firebug, and noscript.
2) they were all vetted (presumably) by mozilla.

I believe, and this is simply speculation, that the problem may have been
caused by noscript stopping/interfering with some scripts on facebook.
Facebook would assume it was malware interfering with the site, and attempt
to block it. I am 99% sure my browser was not really compromised.

I'm going to try and reproduce it later.

On 19 January 2012 22:57, Byron Sonne <byron.sonne@...il.com> wrote:

> Hello,
>
> > “Your computer has malware!” Facebook says to me.
>
> I am really curious to know, assuming that everything you've said is
> accurate, how they determine you've got malware. This is rather curious.
>
> The more I think about it, the more I wonder if something's come between
> you and facebook pretending to be official, hoping to trick you into
> downloading something.
>
> Cheers
>
> --
>  freebyron.org
>

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