Which security solution aims to prevent data loss and protect data from unauthorized disclosure, while also trying to identify if and when data loss occurs?

The security solution that is primarily designed to prevent data loss, protect sensitive information from unauthorized disclosure, and actively identify incidents of data loss is Data Loss Prevention (DLP).

DLP technologies focus on monitoring, detecting, and blocking the transfer of sensitive data outside the organizational network to prevent data breaches. They incorporate various methods such as content discovery and monitoring to ensure that sensitive information remains secure. DLP solutions can alert organizations in real-time if a potential data loss incident occurs, allowing for swift response measures.

Data Loss Detection is a concept that focuses on identifying whether data loss has occurred, but it does not inherently include the protective measures that DLP encompasses. Watermarking serves primarily as a means of identifying and traceability of data rather than outright preventing data leaks. Digital Rights Management (DRM) is mainly concerned with controlling how digital content is used, distributed, and accessed, rather than directly preventing data loss itself. Therefore, DLP distinctly stands out as the comprehensive solution encompassing both prevention and detection aspects concerning data security.