Integrity in cybersecurity refers to the assurance that information remains accurate, consistent, and unaltered except by authorized individuals. It protects data from unauthorized modification, whether accidental or malicious, ensuring that information is trustworthy and reliable. Mechanisms like checksums, hashing, digital signatures, and access controls are commonly used to maintain data integrity. This principle is essential for preventing data corruption, fraud, and unauthorized changes, supporting compliance and operational reliability. Integrity is one of the core pillars of the CIA triad, alongside confidentiality and availability, forming the foundation of information security practices.