I want to know if battlefield 4 is banned, will battlefield 3 be affected?

I'm sorry I sent out these forums, because one of my friends was banned from battlefield 4, and then he didn't do anything, and then his battlefield 3 was banned. So I want to know why

I think your friend got a Punkbuster ban, and is, if I'm correct, enforced on all games running Punkbuster.

Thank you. I'll let him know