Antivirus for Airtime. Guardian is a malware detection and removal tool that is able to identify suspicious activity and fraudulent subscription attempts and in scan mode or in real-time (if enabled) thus empowering a user to identify and remove rogue apps and their unauthorized consumption of airtime or data.Basic Protect Mode (Available on all Mobile Networks): Regularly scans your phone for known threats, that steal your Airtime and data, and allows you to remove them.Real-time Protect Mode (Available for Vodacom, Cell C, and MTN users only): Uses a VPN to monitor mobile data traffic on your device and notify you in real-time of any suspicious activity or unauthorized subscription attempts. It allows a user to immediately address the issue and remove the threat by removing the app from where the attempt occurred.