Re: File sharing with Bittorrent: what possible security threads?

There are a ton of security problems in Bittorrent.

1) As you mentioned embedded malware, trojans and other nasties in the files 
that people are downloading.

2) Bittorrent clients have had some security flaws exposed in them recently. 
Utorrent recently had a flaw that allowed an attacker to execute code.

3) Bittorrent sites are not that secure. Many users will use a common password 
for everything. When a bittorrent site gets hacked and user accounts passwords 
are exposed, it leads to account hijackings elsewhere.

4) When you are downloading/uploading, your IP address is visible to the 
everyone in the same download. You know the problems with that.

5) The legal implications. See number 4 on how you get caught. Bittorrent is 
the new Napster, Kazaa, Limewire, eDonkey. Everyone is using it now and it has 
the attention of the world at the moment.

6) Bittorrent is not liked among the higher level "release" groups. There is an 
ongoing war between the "elitist" hackers who are the first to crack software 
and strictly use FTP to share amongst themselves and bittorrent sites. They get 
mad when they see their releases that were only meant for their groups ending 
up on bittorrent sites. They wage war on the sites and problems 1-4 are of even 
greater concern.

Those are some basics that I can think of.