Severity: HighAction: Be aware

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.

Excerpt from the primary source: BleepingComputer

Who is affected

Home users · Security professionals

What you should do · Be aware

No immediate action is required, but be alert to related scams or suspicious messages.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

We link to original and authoritative sources. Headlines and excerpts belong to their publishers.

Original reporting

Google Calendar phishing campaign hijacks sessions, bypasses MFA BleepingComputer · bleepingcomputer.com · Nov 4, 2026 · Primary source
Severity: HighAction: Review

mSecure password manager hack prompts password reset warnings

mSeven Software is warning current and former mSecure password manager customers to change passwords, reset two-factor authentication, and remove passkeys following a cyberattack that reportedly exposed an encrypted customer database.

Severity: ElevatedAction: Be aware

Microsoft urges Entra ID admins to migrate users to passkeys

Microsoft again asked Entra ID administrators to migrate users to phishing-resistant methods to avoid sign-in disruptions before it retires SMS and voice authentication in February 2027.