Osu's servers were apparently hacked, with the source code being leaked to the public recently. Some of the source code includes a script that at random intervals takes pictures of your screen and uploads them to their servers for no apparent reason.
Sauce from a takedown notice:
Code:
Dear Mr Callum Taylor,
We have received information regarding spam and/or abuse from your server:
"Your site is
hosting content that is infringing on at least one copyright owned by
my company.
An article was copied onto your servers without permission. The
original SOURCE CODE, to which we own the exclusive copyrights, is
private and should NEVER be public in the first place.
The unauthorized and infringing copy can be found at:
https://a.cuntflaps.me/wnfzqv.zip
https://a.cuntflaps.me/bnzasn.zip
https://a.cuntflaps.me/amfnzn.zip
https://a.cuntflaps.me/bpeayw.zip
https://a.cuntflaps.me/ajdgzm.zip
It is hosted on 5.9.94.141
This code was obtained illegally by hacking our systems and should not
be publicized under any circumstance. We are working with law
officials to take action against the prosecutor, and request that this
domain is made unavailable as soon as feasibly possible.full sauce
Open source version of osu for people who dont want to be spied on: here