Son figured out my Netflix password and is watching stuff he shouldn't

So my 10 year old somehow cracked my Netflix password and has been watching PG-13 movies when I'm not looking. Found out because he mentioned a scene from a movie I definitely didn't approve. How strict are you guys with content? I feel like at 10 he should be able to watch some stuff but I also don't want him seeing violence or anything crazy. Should I just make a kid profile or talk to him about it first?