That's probably the HP Instant Ink service, which sends your ink levels to HP every freaking time so they can send a new set of cartridges if it's running low.

That's probably the HP Instant Ink service, which sends your ink levels to HP every freaking time so they can send a new set of cartridges if it's running low. You can set it up without that. HP printers will still look for updates and take their time installing them even when you need to urgently print 2 sheets, as I found out myself :/