An internal leak in cybersecurity refers to the unauthorized disclosure or exposure of sensitive, confidential, or proprietary information from within an organization. This type of leak is typically caused by insiders, such as employees, contractors, or partners, who have legitimate access to information but misuse it, either intentionally or accidentally. Internal leaks can result from malicious intent, negligence, or inadequate security controls. Consequences may include reputational damage, legal penalties, financial loss, and compromised competitive advantage. Preventing internal leaks involves a combination of employee training, access controls, monitoring, and incident response measures to detect and mitigate risks associated with insider threats.