I can’t say I’ve seen anything like that on the webservers I’ve exposed to the internet. But it could vary based on the IP you have if it’s a target for something already I suppose.
Frankly I’m surprised that machine I setup didn’t get hacked.
How could it if all you had was a basic webserver running?
I believe you don’t get Shadowplay without it, so if you need game recording / replay without impacting performance it’s worth installing. But I would recommend the nvidia app beta instead of geforce experience as it doesn’t require a login.
Other than that you don’t get any optimizations by installing geforce experience, other than its game settings tuner thing which doesn’t work at all.