This is the crown jewel. If a new, unknown virus slips past the signature database, System Watcher watches its behavior . If it tries to encrypt your files (Ransomware), KIS rolls back the changes and restores your data. The trial includes the full "rollback" feature.
If you see a screen asking for a license code, scroll down and click "Start trial period" or "Activate trial version." kaspersky internet security trial version