What is the term for preventing data from leaving a network?

The term that best describes the practice of preventing data from leaving a network is "Data loss prevention." This concept refers to strategies and tools that help organizations protect sensitive information from being lost, misused, or accessed by unauthorized users. Data loss prevention involves monitoring and controlling outgoing data to ensure that confidential data does not leave the organization’s premises without proper authorization.

Outbound connection blocking refers to the practice of blocking network traffic that is trying to leave the organizational network. While this could be part of a data loss prevention strategy, it does not fully encompass the broader scope of DLP, which includes implementing policies, monitoring user behavior, and utilizing various technologies to mitigate the risk of data breaches or losses.

Data encryption is a process that secures data by converting it into a code to prevent unauthorized access. While encryption helps protect data while in transit or at rest, it is not specifically focused on preventing data from leaving the network.

Access control involves defining and restricting who has access to specific resources and data within an organization, but it does not specifically address the prevention of data leaving the network.

In summary, the correct term for preventing data from leaving a network is data loss prevention, which is a comprehensive approach to secure sensitive information.