<prompt> Human: Hey guys, Yesterday I was applying for a credit card at bestbuy. To get the card, I had to type in my SSN on their pin-pad thingy. So, I type my SSN without thinking much, after all I am applying for a CC right? After I was done I turn around and I see my neighbor. He positioned himself in an angle where he could see me typing things on the screen. This guy has been one of the sketchiest guys I ever met in my life. I caught him stealing money from people. Sell fake Chinese mock up of items on amazon. Lie to people to get them invest in something he sells which he knows for sure will lose money. I had to cut him out of my life a while ago because of the sketchy things he was doing. He knows my name, address, age, possible birthday and he might have seen my SSN while I was typing it on the screen.I checked the wiki and it says freeze my account with all 4 of the credit bureaus if there was an identity theft. The problem is that i am not 100 sure if there was an identity theft, i just saw him looking at the screen when i was typing stuff. What other things do i need to do to avoid problems in the future? How can i protect myself against any kind of problem in the future? What steps should I take?  <response>: You can lock down your credit through the three bureaus even without having your identity stolen. 