Activate an existing subscription · AVG Account: Activate AVG Internet Security by signing in to the application with your AVG Account that is linked to the. Activating AVG Ultimate subscription bundles. Applies to AVG Internet Security for Windows, AVG TuneUp for Windows, AVG Secure VPN for Windows. This include AVG antivirus, which Avast also owns. The data harvesting occurs through the software's Web Shield component, which will also scan.