Which of the following focuses on security and encryption to prevent unauthorized copying of digital content?

Digital Rights Management (DRM) specifically focuses on the protection of digital content by employing security and encryption measures to prevent unauthorized access, copying, and distribution of that content. It is a technology used by content creators and distributors to control how their digital media can be used, ensuring that copyright and licensing agreements are upheld. DRM enables content owners to enforce their rights in a digital environment where the risk of unauthorized copying is high.

This technology often includes mechanisms that restrict the ability to copy, share, or modify files, which is crucial in industries like music, movies, e-books, and software, where protecting intellectual property is essential. Through DRM, companies can not only protect their content but also analyze usage patterns to better understand consumer behavior and improve their offerings.

The other options address different security aspects. Access Control List (ACL) focuses on permissions and user access to resources, Data Loss Prevention (DLP) primarily aims to prevent data breaches and unauthorized data transmission, and a Virtual Private Network (VPN) provides secure remote access to networks without directly addressing the protection of digital content itself. Each serves a vital role in the broader landscape of information security, but DRM uniquely targets the protection of digital rights and content integrity.