Search for the Microsoft Outlook API and you will find at least four things wearing that name: the old Outlook REST API, ...

HOLLOWGRAPH malware abuses Microsoft 365 calendars for covert command, control, and exfiltration. Attackers hide encrypted instructions and stolen files inside future-dated calendar events. Defenders ...

Trump Media & Technology Group (TMTG), the parent company of Truth Social, launched the Truth API (Application Programming Interface) on Aug. 1, giving Wall Street firms and institutional investors ...

On July 20, 2026, Group-IB security researchers released a study describing an implant known as HollowGraph that converts a hacked Microsoft 365 calendar into hidden communication channel. The virus ...

A recently discovered piece of malware abuses the Microsoft 365 calendar for command-and-control (C&C) communication, Group-IB reports. Dubbed HollowGraph, the malware is believed to be part of a ...

A newly identified Windows malware sample, dubbed HOLLOWGRAPH, is abusing the Microsoft Graph API to turn a compromised Microsoft 365 calendar into a covert two-way command-and-control channel.

A stealthy new malware strain called HOLLOWGRAPH that hijacks Microsoft 365 calendars to secretly communicate with hackers, disguising malicious commands as ordinary calendar invites. HOLLOWGRAPH is a ...

A newly discovered espionage implant has been using a hijacked Microsoft 365 calendar as its command channel, planting operator instructions and smuggling out stolen files as attachments on calendar ...

A newly identified Windows malware sample abuses Microsoft Graph API to transform a compromised Microsoft 365 calendar into a covert two-way command and control (C2) channel. Researchers at Group-IB ...

The Benzinga Events Calendar API provides structured access to upcoming corporate events that can influence market activity and investor sentiment. Coverage includes investor conferences, shareholder ...

A threat actor targeting Microsoft 365 and Azure production environments is stealing data in attacks that abuse legitimate applications and administration features. Microsoft tracks the actor as Storm ...