File sharing with Bittorrent: what possible security threads?



Hi security specialists

My friend is a heavy bittorrent user. He download there pirated stuff
like movies, sound, software, etc

What are the security problems from the file sharing scene (for Mac and
Linux user)? Are there at all issues?

I heard from embedding maleware to Windows Media Files, adding Trojans
to pirated applications, etc

Please provide me a summary about the security incidents in pirate scenes.

thank you

cheers
Simon




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