If you detect unauthorized password sharing, take the following steps immediately:
1. Change Passwords: Promptly change the passwords of compromised accounts. 2. Investigate: Conduct a thorough investigation to understand the extent of the breach and identify any affected data. 3. Inform Stakeholders: Notify all relevant stakeholders, including your team, customers, and possibly regulatory bodies, depending on the severity of the breach. 4. Strengthen Security Measures: Review and enhance your security measures to prevent future incidents.