One year ago I developed the first (and from what I know, still only) real-time CSAM detection tool for the fediverse. This has been in use by this instance and recently the real-time version was put in use by lemmy.world. Unfortunately the false-positive rate was a tad too high as this was still using my original implementation in horde-safety. But through our demands in the AI Horde, we've had to constantly tweak and improve it over the past year and thereofre we've had an improved checker for a while, but not used in fedi-safety.
Unfortunately I haven't had the time/motivation to update into it recently so lemmy.world pinged me about its false positive rate being a tad too high, I felt it was a good time to do so.
So now horde-safety has been updated and it should already be more accurate. The admins of lemmy.world already put it into production and they have the most demand, so they'll report back with their findings in a week. If this is not sufficient for lemmy's purpose, I have some other ideas for tweaking it.
And yes, memes and pressure on the admins is what caused me to look into it, but remember we're all just volunteers here. I would have looked into it if y'all had asked nicely as well ;)
Speaking of volunteers, if you want to support my work in providing tooling for lemmy and the Fediverse, feel free to send some support my way which covers all of my FOSS project work.
Your search history must look quite suspicious.