SecurityCorroborated

Passkey-themed phishing attacks lead to Microsoft 365 data theft

Microsoft says threat actors linked to ShinyHunters, Helix, and other extortion gangs are using passkey and single sign-on-themed social engineering attacks to compromise corporate Microsoft accounts and steal data from Microsoft 365 services. [...]

What happened

Microsoft says threat actors linked to ShinyHunters, Helix, and other extortion gangs are using passkey and single sign-on-themed social engineering attacks to compromise corporate Microsoft accounts and steal data from Microsoft 365 services. [...]

Why it matters

The incident may affect operational continuity, asset safety or trust around Microsoft. Watch for verified scope and remediation.

Affected entities

Microsoft · MSFTDown

View evidence

2 reports · 1 original report · 2 independent

  1. BleepingComputerPrimary source · Supports · EN · 100%
    Passkey-themed phishing attacks lead to Microsoft 365 data theft
  2. The Hacker NewsIndependent · Supports · EN · 54%
    Attackers Use Passkey Phishing to Hijack Microsoft Cloud Accounts and Exfiltrate Data

Claims

  • Passkey-themed phishing attacks lead to Microsoft 365 data theft Observed

Conflicts

No material conflict detected in the available evidence.

Timeline

  1. First reported
  2. Unverified · 64/66%

Market move following event

Market reaction is not yet available for this asset and time window.

Score explanation

Confidence · formula confidence-2.1.0
Source trust82
Independent corroboration76
Primary evidence35
Claim consistency82
Extraction confidence82
Attribution quality90
Impact · formula impact-2.1.0
Event magnitude96
Market relevance74
Entity significance94
Market breadth57
Novelty60
Urgency48
Ranking · formula rank-1.0.0
Confidence factor0.874
Freshness factor0.646
Breaking bonus0