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UNK_CustomCloak

Unknown Active
Mentions
1
First seen
14 Jul 2026
Last seen
14 Jul 2026

Relevant to you · Affects your stack

Technology:
Microsoft Entra ID

Origin

Unattributed

Profile

UNK_CustomCloak uses OAuth Client ID spoofing to validate stolen Microsoft Entra credentials. This technique enables attackers to take over compromised accounts. No further details are known about this actor.

Affected vendors

Microsoft

Activity (8 weeks)

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Recent activity

ESC