Not giving out personal information!

Okay I've seen a few times now personal photos as profile pictures, and read alot of times people giving what I would say is personal information?

So what are the rules plus when I check the profile bio they don't have any info, and no name just the nas2325 whatever just confused by the paradox and concerned

I have already written my concerns on here before, I feel like people are trying to exploit what we write on here and also trick us into giving information to them.

Who are the people who regulate the forums?