Some of my (dumb) friends say that its possible to hack an account only with the account name, Is it actually possible?
I personally think that it isn't possible to hack an account without knowing the PW
(Well yes, if you have a virus in ur computer, then maybe it is) 
But lets say that I have a Steam account (Which I do 

)
then, someone wants to hack my account, he just types my account name somewhere and gets my pw, logs in and changes my pw, Is that actually possible?
(Sorry for duplicating so many words)