📢 Microsoft 365 calendars become spy drop boxes in HOLLOWGRAPH campaign
📢 Microsoft 365 calendars become spy drop boxes in HOLLOWGRAPH campaign
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Date: 2026-07-20T14:59:00
Source: The Register Security
Read more: https://www.theregister.com/security/2026/07/20/microsoft-365-calendars-become-spy-drop-boxes-in-hollowgraph-campaign/5274982?utm_source=dstif.io
Source: The Register Security
Read more: https://www.theregister.com/security/2026/07/20/microsoft-365-calendars-become-spy-drop-boxes-in-hollowgraph-campaign/5274982?utm_source=dstif.io