Log into PlayStation account Afraid?

Bo
- in PlayStation
1

A good colleague gave me his account today which has 400 million gta dollars. He sent me the data and said I should register, now I'm afraid to register there. The reasons for this are that I'm afraid that if I log in, he could do something to my account. Can he do something with my data when I log into your account on my PlayStation? I'm afraid that my account will be stolen somehow.

So

Huh? How should he get your account data when you log in with his account? Sense?