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APT41 Hacked Google Calendar: Espionage Tactics Uncovered

6/3/2025

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Summary

Story summary

A recent report uncovers the alarming tactics of the Chinese hacking group APT41, which exploited Google Calendar for cyber-espionage. By embedding malware instructions in calendar events, they created a hidden command-and-control channel. Thanks to Google’s Threat Intelligence Group, APT41’s infrastructure was dismantled, and new detection rules were implemented to thwart this sophisticated threat.

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Story summary

A recent report uncovers the alarming tactics of the Chinese hacking group APT41, which exploited Google Calendar for cyber-espionage. By embedding malware instructions in calendar events, they created a hidden command-and-control channel. Thanks to Google’s Threat Intelligence Group, APT41’s infrastructure was dismantled, and new detection rules were implemented to thwart this sophisticated threat.