App Store asks me for login after updating, and its prefilled with an unknown email wtf? Am I hacked

[johnnyXcrane]

Here is a screenshot http://i.imgur.com/HiTctCH.png

I don't know this email adress! My Apple ID is completely different.
This is super strange, can it be possible that my Mac got hacked?

 

[NT1440]

Here is a screenshot http://i.imgur.com/HiTctCH.png

I don't know this email adress! My Apple ID is completely different.
This is super strange, can it be possible that my Mac got hacked?

That means one of the Apps you downloaded from the App store was downloaded originally with that Apple ID (perhaps a friend or relative when they were using your computer?).

You can figure out which App it is by choosing to update each App individually (instead of Update All as you've selected) until you see which is prompting for that Apple ID. Somebody used your computer, you were not hacked.