NewsHelp Net Security
Cybercriminals favor Microsoft over Apple and Google in brand phishing attacksType Research & news
Microsoft
Fake Calendar Invites Target 40,000 Firms in Microsoft Credential Theft
6 sources
At a glance
Low
MonitorNo fixed deadline
Evidence-weighted, not popularity
Why Low
Low rather than Medium: UK relevance is 40 of 100, little UK-specific signal so far.
Briefing
- Organisations should verify if they have received suspicious calendar invitations and ensure their Microsoft credentials are secure.
Next steps
Monitor- For awareness — no fixed action deadline for this reporting
- No specific technical details about the attack vector or affected components are provided in the claims.
Next steps
Monitor- No immediate technical action — track if your estate depends on the products or vendors discussed
Summary
- Fake calendar invites targeting 40,000 firms are reported to be part of a Microsoft credential theft campaign.
- The campaign involves phishing attempts using fake calendar invitations to steal Microsoft credentials.
Read the original reportHelp Net Security(opens in a new tab)
3 reports
Part of Fake Calendar and ChatGPT Phishing Campaigns
Same event, different frames
Distinct often headline the same incident differently.
NewsNews Ghana
Microsoft behind a third of brand phishing, Check Point saysNewsAfrica Business Communities
Microsoft tops phishing list as attackers turn to AI toolsPulse
Last checked 7d ago · Recheck overdue since 2 Nov 2026, 22:09 UK time
Update
1 Nov 2026, 22:09 UK time · 7d ago
4 corroborating sources attached.
Drag to pan · Ctrl / ⌘ + scroll or pinch to zoom8 events
1 quiet check hidden.
Sources
- Help Net SecurityNews
Cybercriminals favor Microsoft over Apple and Google in brand phishing attacks
- Help Net SecurityNews
Week in review: PHP vulnerabilities patched, exploited Palo Alto GlobalProtect VPN flaw
- News GhanaNews
Microsoft behind a third of brand phishing, Check Point says
- Africa Business CommunitiesNews
Microsoft tops phishing list as attackers turn to AI tools
- Grande ConsumoNews
Microsoft is used in one-third of phishing attacks that impersonate brands.
- HackreadNews
Fake Calendar Invites Target 40,000 Firms in Microsoft Credential Theft
How we know
Statements extracted from sources. Higher confidence means stronger corroboration.
- ClaimedHeadline60% confidence
Fake Calendar Invites Target 40,000 Firms in Microsoft Credential Theft
- ProbableSummary fact75% confidence
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