[MlMt] one pixel tracker images

[Bill Cole]

On 18 Mar 2021, at 11:31, Steven M. Bellovin wrote:

> It can't tell if it's a 1x1 image until after it's downloaded, by 
> which
> time the damage has been done.

It can tell if the IMG tag includes width & height attributes, which it 
almost always will in HTML mail, as it is critical for doing partial 
rendering if the image isn't available.

-- 
Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
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