It defeats the purpose of security.
Because the software files have been "cracked" or modified by a third party, there is no guarantee the security tool itself hasn't been bundled with hidden malware or backdoors.
is a great way to understand how modern cybersecurity evolved. While specific version numbers like v21.11.3215 are often associated with archival collections or "pre-activated" software—which often carry significant security risks—the core software remains a staple for PC protection. The Anatomy of AVG Internet Security