Google Calendar phishing campaign hijacks sessions, bypasses MFA

A phishing campaign used Google Calendar invites, trusted redirects, and fake login pages to hijack corporate Google sessions and bypass MFA protections. Material Security examines how Operation CloudFire tracked the attacks, blocked malicious messages, and helped take down nearly 900 domains used by the attackers. [...]

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https://www.bleepingcomputer.com/news/security/google-calendar-phishing-campaign-hijacks-sessions-bypasses-mfa/

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https://www.bleepingcomputer.com/news/security/google-calendar-phishing-campaign-hijacks-sessions-bypasses-mfa/

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Sponsored by Material Security

id: 3991
uid: d6aJc
insdate: 2026-11-04 15:10:06
title: Google Calendar phishing campaign hijacks sessions, bypasses MFA
additional: A phishing campaign used Google Calendar invites, trusted redirects, and fake login pages to hijack corporate Google sessions and bypass MFA protections. Material Security examines how Operation CloudFire tracked the attacks, blocked malicious messages, and helped take down nearly 900 domains used by the attackers. [...]
category: Cybersecurity
md5:
guid: https://www.bleepingcomputer.com/news/security/google-calendar-phishing-campaign-hijacks-sessions-bypasses-mfa/
source_url: https://www.bleepingcomputer.com/news/security/google-calendar-phishing-campaign-hijacks-sessions-bypasses-mfa/
updated:
image:
author_name: Sponsored by Material Security
author_link:
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