It might just be because your program is set to automatically do that with unknown programs. Im not sure without knowing what program you use. But I've never had a problem with viruses from this game.
I dowloaded a bunch of games of this platform and nerver had a problem with it my antivirus called kaspersky said its a virus so i dont know XD
There was an update, it was a bug, enjoy.
My antivirus said that chrome was a virus. the antivirus should be used as a caution not as a guarantee
that wasnt a mistake, youre anti virus correctly identified chrome :P