Oversharing in cybersecurity refers to the act of granting access to data, files, or resources beyond what is necessary, or for a longer duration than required. This can occur intentionally or unintentionally, often due to a lack of strict access controls or insufficient awareness of security policies. Oversharing increases the risk of data breaches, unauthorized access, and information leaks, as more individuals or systems have access to sensitive information than needed. To prevent oversharing, organizations should enforce the principle of least privilege, regularly review access permissions, and educate users about the importance of limiting data sharing to only what is essential for their roles.