Google Calendar RAT (GCR) is a red teaming tool that uses Google Calendar events as a covert channel for Command & Control (C2). GCR connects to Google Calendar to check for new commands and execute them on the target device. It's difficult to detect because it only communicates through official Google infrastructure. #GoogleCalendarRAT #RedTeamingInfrastructure

https://cybersecuritynews.com/google-calendar-rat/