As a newbie, I always login to check if my forum account is still intact. I want to know if it's possible for my account to be hacked.
You wrote only three posts in bitcointalk forum and you are so concerned about your account getting hacked? C'mon man 
It's not like you are hiding top secret information here, but yes everything can be hacked including forum account and it's mostly happening by owners mistake with phishing attacks.
Just be careful when opening any pages, check address bar, don't click any links in messages from unknown people, and you will be just fine.