Websockets can be used for many things and are actually a sound tech idea but I don't know about a single website that would use them to do something I need (no, I don't use social networks, don't play online games and don't use web voip - these are the 3 major areas that can make use of them) so disabling them seems a good idea. In general: disable everything you don't use - this will most certainly increase your safety and disrupt a huge portion of mainstream malware and spyware functioning.

When I was using Windows I had a software firewall that would ask me about every app that is trying to access the Internet and let me choose if I want to block or allow it - I would only allow the web browser, the messenger and the SSH client and completely block everything else (DroidWall and XPrivacy let you do this on Android, LittleSnitch does this on Mac, I miss such a tool on destkop GNU/Linux a huge lot).

So is HTTP. Better disable that too.

I use them for nefarious purposes. But then i use everything for nefarious purposes.

> Websockets are used for nefarious purposes?

Websockets were created sedcifically to get clients to transfer data to the server at the request of the server and without the user specifically wanting to send it.