this post was submitted on 25 Sep 2024
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[–] [email protected] 1 points 3 months ago* (last edited 3 months ago) (1 children)

Server or client, every supposed prefetch would be unique. If I trick an LLM client into grabbing:

site.com/random-words-of-data/image.gif

Then:

site.com/more-random-data/image.gif

Those are two separate images to the cache engine. As the data refreshes, the URL changes, forcing a new grab each time.

For email, marketers do this by using a unique image URL for every recipient.

[–] [email protected] 1 points 3 months ago (1 children)

Cool, all of your images are getting fetched by the server as it receives and processes the emails. You have 100% open rate on all emails to that domain within 3 minutes of send.

What do you know about the user and their behavior? Nothing. The prefetch is not tied to their actions, therefore you cannot learn anything about their actions.

[–] [email protected] 1 points 2 months ago (1 children)

This post isn't about email open rates, it's about data exfiltration. But for email speficially, show me major providers that prefetch by default.

[–] [email protected] 1 points 2 months ago

For data exfiltration, you’re right - this doesn’t help.