I think my Steam account is being hacked. I and my friends constantly get messages saying that I'm playing War Thunder, even if my computer is closed, turned off, or anything else. It thinks I've played a total of 6.2 hours of War Thunder, even though I haven't played a total of over 10 minutes of it. Just earlier today, I wanted to play Spiral Knights with some of my friends, but it said I was already logged on from a different location. I don't know how to change my password, though. If you guys could help me with that, I would really appreciate it.Comments/complaints/solutions?