In cybersecurity, a single source of truth (SSOT) refers to a centralized repository or system where data is stored, maintained, and validated to ensure consistency and accuracy. By having one definitive location for information, organizations reduce the risk of discrepancies, outdated records, and conflicting data across different departments or systems. This approach is crucial for maintaining data integrity, enabling secure access control, and supporting compliance requirements. An SSOT helps ensure that all users and systems reference the same validated information, streamlining decision-making and reducing vulnerabilities caused by misinformation or unauthorized data modifications.