What is Sensitive Data? 5 Top Strategies For Securing It

**Executive summary:** This Guidance outlines what constitutes sensitive data (PII, PHI, financial, credentials, proprietary), documents rising third-party and supply-chain risks, and recommends five core strategies—classify and inventory data, enforce access controls, encrypt data everywhere, monitor and respond in real time, and train personnel—while highlighting continuous third‑party monitoring (SecurityScorecard SCDR) as a key mitigation measure.