A data leak occurs when sensitive or confidential information is unintentionally exposed to unauthorized individuals, either through human error, system vulnerabilities, or malicious actions. Unlike a data breach, which usually involves a deliberate cyberattack, data leaks often happen accidentally, such as when files are mistakenly shared or stored in unsecured locations. The leaked data can include personal details, financial records, or proprietary business information. Cybercriminals may exploit data leaks for blackmail, identity theft, or to damage an organization's reputation. Preventing data leaks involves strong security practices, employee training, and regular system audits.