HN Explorer

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_garrett
Automattic is running a pull based CDN that would literally work on any URL. Hardly creepy https://developer.wordpress.com/docs/photon/
pixodaros
"Literally work on amy URL" is right. As far as I can tell, if you give i0.wp.com/ i1.wp.com/ or i2.wp.com/ *any URL of a media file* those domains will happily scrape it, spread it around their CDN, and start serving it!
thebadsleep
It's called "Image Accelerator" in the Dashboard > JetPack screen and can be toggled on and off.
pixodaros
As the OP says, the site in question does not have JetPack installed. And those Automattic domains will copy and serve any media file available at a URL if you call for it.
pixodaros
It appears that the Automattic CDN does not just fetch and save files from sites without Wordpress or Jetpack, it fetches and saves them even if robots.txt says no crawlers.