Consent Phishing: OAuth Grants Enable Token Hijacks
🔐 In February 2026 the EvilTokens PhaaS campaign abused the OAuth consent flow to harvest long‑lived refresh tokens, compromising over 340 Microsoft 365 organizations across five countries. Victims completed legitimate sign‑ins and MFA at microsoft.com/devicelogin, then clicked consent and unknowingly granted broad scopes for mail, drive, calendar, and contacts. Because the attacker received signed, refreshable tokens rather than credentials, MFA and typical SIEM correlation did not detect the intrusion. The incident demonstrates how normalized consent clicks have become a critical security gap.
