Account Takeover (ATO) via Token

Account Takeover (ATO) via Token Vulnerability

Identified a critical Account Takeover (ATO) vulnerability during web application and API penetration testing of a financial platform. By exploiting insecure token validation, I gained unauthorized access to user accounts without credentials.

Key Findings:

Weak token validation

Missing session/device binding

No token expiration or rotation

Impact: Unauthorized account access, financial data exposure, and fraud risk.

Outcome: Delivered a professional VAPT report with proof of concept (PoC), risk assessment, and remediation recommendations based on OWASP best practices.