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Has anyone here use AccessDiver? (Brute Forcer)
AccessDiver itself isn't a trojan horse, but you might've downloaded an infected file instead of the real one.
Get a new copy here: http://www.accessdiver.com/downloads.htm
If your antivirus still complains, it's just because it's a so-called 'hack tool'. Then you should just add an exception for AD in your AV and it'll work properly :)