Often required users to disable their network card or use a firewall to block the software from verifying serial numbers online.
Usually paired with generic serial numbers (e.g., 666-69696969) and specific product keys like 001D1 for AutoCAD 2012. Risks and Security Concerns Using "crack" tools like this carries significant risks: X Force 2012 X32 Exe 57
Why are keygens labeled as viruses, and are they really threats? Often required users to disable their network card