When we download some of illegal software an antivirus often warned about win32/keygen
From this link I see Kaspersky said not-a-virus:Keygen.
Is win32/keygen dangerous?
closed as not a real question by Xavierjazz, Canadian Luke, Simon Sheehan, Sathya♦ Dec 15 '12 at 17:14
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. If this question can be reworded to fit the rules in the help center, please edit the question.
Your antivirus software is alerting you to the presence of a key generator, not to discourage piracy, but to warn you that the software you're using might not be legitimate and to warn you of the general risks of using illegitimate software. The warning usually does not indicate the antivirus has detected actual malware, aside from the keygen itself, if you would classify it as such.