Google is warning of multiple threat actors sharing a public proof-of-concept (PoC) exploit that leverages its Calendar service to host command-and-control (C2) infrastructure. According to The Hacker News*, the tool, called Google Calendar RAT (GCR), employs Google Calendar Events for C2 using a Gmail account. It was first published to GitHub in June 2023. “The … More Google Warns How Hackers Could Abuse Calendar Service