It is impossible to place telephone nodes in Russia without equipping the server with threat protection equipment. Of course, I won't buy a box for hundreds of dollars to use a home PBX, so technically I'm outside the law. =) It is also impossible to host sites with more than 10,000 visitors without registering with Roskomnadzor. and all accounts with authorization must support logging in through the public services portal or by phone number. considering that only legal entities can do this, of course I don't do it.
The United States and the European Union have data protection laws, so if you decide to save money on hosting for friends and install a server outside the Eurozone, depending on the data you store, you are also formally violating the law.
because you might be surprised, but warez is not illegal in Russia. We have slightly different legislation in the field of intellectual property. Only the person who profits from warez can be held responsible. That is, either an organization that uses it commercially, or a seller. If I break the software or record a movie for the sake of art or love for my neighbor without money or donations it's legal. of course, websites are responsible even if they receive income from advertising, well, many of them are blocked for Russians. I go to rutracker via VPN =)
But just try to talk with a voice call via telegram... You won't be able to do that, because direct calls without anti-threat systems (i.e., after completely listening in on calls) are illegal.
UPD: how that look right now