Password sharing presents a significant revenue loss and security risk for SaaS companies, streaming services, and subscription platforms by allowing unauthorized users to access services, which skews analytics and complicates account security. The challenge lies in curbing this behavior without alienating legitimate users, as shared accounts can result in lost revenue, increased security vulnerabilities, and inaccurate user data. Effective strategies to mitigate password sharing include using device intelligence, IP and geolocation analysis, login velocity monitoring, limiting concurrent sessions, and implementing step-up authentication for suspicious activities. By adopting these methods, services can encourage legitimate multi-user plans, improve user engagement metrics, and reduce support tickets related to shared accounts. Solutions like Fingerprint enhance detection and prevention by providing persistent device identification and real-time risk assessment, offering a balance between security and user experience.