PS4 Game sharing, could I get banned?

If I use a sharing game with my friend (The games are on his account and I would use his account as a primary) Could I get banned? I just bought my console today and have no more money to spend on a game right now, if I get banned the ban is for my console or my user or his account ? I don't want my console to get banned (I just bought it. If the console gets banned, I must throw it away because I can't play online anymore.) I just wanna use his games to play online.

UPDATE 1

I don't understand; If the primary account is playing multiplayer the secondary account can't play multiplayer at the same time? (I have my user name and PSN account and my friend has his username and PSN account (but I'm using his games and PSN Plus membership as the primary console.)

UPDATE 2

I was searching in net and I found out that some people were banned because of this act. IF I get banned, will this be a console ban? I mean would Sony would ban my console from PSN forever without a warning, or they will first just ban the account that is shared then if it happens again on console, theywill just ban the console? (That is my biggest fear; that they ban my console.)