Tag: oauth security risk
2 articles
OAuth Grants Expose Hidden Risk Below MFA Perimeter
In just five weeks, a phishing-as-a-service platform called EvilTokens compromised over 340 Microsoft 365 organizations across five countries by exploiting a clever trick: instead of stealing passwords, it convinced users to hand over OAuth refresh tokens, granting attackers long-term access to sensitive data like mailboxes, drives, and calendars. This sneaky tactic allowed hackers to bypass traditional security measures, including multi-factor authentication.
OAuth Grants Expose Hidden Attack Vector in Enterprise Workspaces
Unmanaged OAuth grants are a ticking time bomb in enterprise workspaces, with 80% of security leaders recognizing them as a critical or significant risk. A recent attack by threat actor UNC6395 exploited valid OAuth refresh tokens to breach Salesforce environments of over 700 organizations, highlighting the devastating consequences of neglecting OAuth security.