Update in Mac App Store, just not for my account

Question

My Mac App Store tells me that I've got at update for one of my programs, but when I open Mac App Store it's a update for Angry Birds, a game I don't have on my mac. When I press update a pop-up appears and say I need to login with [email protected] to update the program/game. Problem is that [email protected] looks like a russian account and i'm not from Russia. My account is set up with a gmail account and doesn't look anything like the russian account.
Am I being hacked?
Can anyone please help me?

Answer 1

Since my last comment I have come up with a way to hunt down the pirated app.
All MAS apps have a MAS receipt in their app bundle. Check any app acquired from the MAS. Right click on the app's icon in your Apps folder and choose Show package contents. In the Contents folder is a _MASReceipt folder and in that folder is the coded MAS receipt. It has the Apple ID of the MAS account that bought/acquired the app from the MAS. It is that receipt that the MAS uses to alert you that an app has an update. There would not be a notice of an update with someone else's Apple ID showing in the MAS on your Mac, if there was not an app with a receipt from this person's account somewhere on your Mac.
Download the free app FindAnyFile (FAF);
http://apps.tempel.org/FindAnyFile/
This app is easier to use and seems to be more powerful than Spotlight. Open FAF and in the box type _MASReceipt and press Find. It should come up with a list of every app on the Mac with a MAS receipt. Compare the apps with receipts in FAF's list with your purchased apps list in the Mac App Store. The odd app out should be the pirated app.