Uh.. I Think Something Went Wrong?

Avast Free Antivirus / Premium Security
1

I had Avast Premier for a while, but after updating my computer, I suddenly find that it’s registered under a different name, and it’s extended until 3/19/2018…

Has this happened to anyone else? I’m nervous and trying to figure out whether or not someone has put a Trojan in my system or something like that, and this guy is somehow using my computer.

2

Sorry if this is something trivial and normal, I’m just an idiot with computers, and this is making me paranoid to even access Facebook.

3
I'm nervous and trying to figure out whether or not someone has put a Trojan in my system or something like that, and this guy is somehow using my computer.
Idoubt that some trojan or hacker would update the security, that would be the opposite of what a trojan or hacker would try to do

Are you the only user of this computer?