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Oct 31, 2025

O365 Calendar Invite Attack Remediation

Calendar invites have become a new phishing vector. Abnormal now automatically removes malicious or unwanted events linked to remediated emails

Calendar invites have become a new phishing vector. Abnormal now automatically removes malicious or unwanted events linked to remediated emails, helping organizations maintain clean, trusted calendars.

With this release:

Automatic Removal of Malicious Calendar Invites

  • Detects and deletes .ics and embedded calendar events tied to remediated messages

  • Removes malicious and unwanted calendar invites from end-user calendars

New Calendar Invite Attack Insight

  • Surfaces calendar-based attack activity directly in the Threat Log for faster investigation

By extending remediation to calendar events, Abnormal closes a common phishing gap and ensures Microsoft 365 environments stay safer and easier to manage.

MKT1138 Pendo image for calendar invite attacks 1

Protect Against Evolving Email Threats

See how behavioral AI detects attacks that legacy defenses miss.