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"Spy pixels in emails have become endemic"

Nathan Galt mailinglists at ngalt.com

Thu Feb 18 03:24:34 GMT 2021

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On Feb 17, 2021, at 6:19 AM, Louis Brauer <louis at brauer.family> wrote:

Am Mi, 17. Feb 2021, um 14:58, schrieb Petite Abeille:

C: gemini://example.org

S: 30 gemini://example.org/trackerid

C: gemini://example.org/trackerid

S: 20 text/tracked

The above was to illustrate the use of redirects to uniquely tag URLs,

without any use consent.

Nothing to do with data: URI.

Even though a data URI could contains resources which could trigger

network activities.

Hm, I'm not a security or browser developer but do you have an example of a "data URI" that would trigger network activities in Gemini? I thought that Gemini spec was designed in a way to prevent that from happening.

SVG images would work nicely in data: URIs.

They can have JavaScript in them.

If I were making a graphical Gemini browser, I’d just decode the base64 text and then hand the entire blob off to some SVG library, which, for all I know, might run the JavaScript.

Or it might not. I don’t remember seeing any SVG-decoding libraries that depended on Node.