Cloud security research writeups published today warn of widespread threat campaigns leveraging illicit consent grants to establish persistent access across enterprise cloud tenants. Threat actors trick users into granting administrative API permissions to rogue application registrations.
The attack methodology abuses OAuth 2.0 authorization workflows in Microsoft Entra ID formerly Azure Active Directory. Threat actors deploy deceptive web applications requesting high-privilege Graph API scopes like Mail.ReadWrite and Files.ReadWrite.All. When corporate users grant consent, attackers receive persistent OAuth refresh tokens, allowing them to access corporate email mailboxes, download cloud files, and exfiltrate tenant data without triggering traditional password reset alerts or multi-factor authentication prompts.
Subverting cloud identity permissions via illicit consent grants bypasses traditional perimeter access barriers. Because OAuth refresh tokens remain valid regardless of password updates, unmonitored consent grants permit threat actors to maintain persistent access to corporate cloud assets undetected.
– Enforce admin consent requirements in Microsoft Entra ID, restricting unprivileged users from consenting to multi-tenant applications.
– Audit active OAuth application consent grants across cloud tenants, revoking permissions for unverified third-party applications.
– Implement conditional access policies restricting OAuth token issuance based on trusted device compliance and location rules.
– Deploy identity threat detection to flag anomalous Graph API data access volumes originating from third-party OAuth apps.
Cloud identity governance demands strict OAuth consent controls and continuous application auditing to ensure corporate cloud tenants remain insulated from persistent illicit consent exploitation. #CodeDefence #Microsoft #EntraID #Azure #OAuth #IdentitySecurity #CloudSecurity #Phishing #AppSec
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