[gaia e-mail] sanitizing web-bug images?

Philipp Kewisch mozilla at kewis.ch
Wed Aug 15 21:15:22 UTC 2012

I think this will be a battle against windmills, like spam. If you set up means to blacklist a few currently common practices, spammers/advertisers will do something different. The easiest is using a large image that has some real information, aside from tracking the user.


On Aug 15, 2012, at 22:51, Irving Reid <irving at mozilla.com> wrote:

> (premature send...)
> On 12-08-15 4:44 PM, Irving Reid wrote:
> ...
>> Certainly if we have a way to determine visibility, not downloading
>> anything invisible
> would be nice.
> It might be interesting to run a testpilot to figure out (a) how many external references and of what types people receive in email, (b) how many of those declare their sizes, and (c) the distribution of sizes (both declared and undeclared) of those external objects.
>>  - irving -
>> On 12-08-15 4:34 PM, Andrew Sutherland wrote:
>>> To be clear, I'm not proposing making it impossible to view embedded
>>> images or external images in e-mails.  Both of those are totally
>>> supported.  I am proposing automatically removing self-identified 1
>>> pixel by 1 pixel external images since they are unlikely to be anything
>>> other than web bugs and can add confusion since we will prompt the user
>>> if they want to show that external image (which may be the only image).
>>> Andrew
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