Many years ago, Russian hackers were able to use a an old version of Adobe Acrobat to completely back door your computer. In fact, they could then use your computer/IP to hack other people. I.e. all you had to do, was just not update the program and you were completely vulnerable.

If there’s any software I would avoid pirating, it’s adobe. They (hackers) know many businesses use the adobe suite of products, and so concentrate a lot of effort onto cracking old and pirated versions of the same. It wouldn’t surprise me if they themselves pirated for the purpose of sending out Trojans malware into the world.