He told me that the rules should have included this warning: Do not download pirated software and cracks from filesharing networks and cracks sites because they are a major source of malware ...

Many people around the world would rather download a cracked version of expensive software (for example Windows, the Adobe Suite, or similar) from a torrent site, and follow up with a crack/keygen ...

"As long as people continue to download cracked software, attacks like these will continue and continue to be profitable for attackers," Avast says.