What does segmentation help achieve in network security?

Segmentation in network security primarily helps to achieve a reduction of the attack surface. By dividing a network into smaller, isolated segments, organizations can limit the scope of access for users and devices. This means that if one segment is compromised, the attacker will not easily be able to move laterally to other parts of the network. Each segment can have its own security controls, monitoring, and rules, which enhances overall security by ensuring that critical systems are less exposed to potential threats.

This approach not only helps in minimizing the number of attack vectors available to malicious actors but also allows for better enforcement of security policies tailored to the needs of each segment. For instance, sensitive data can be kept in its own segment with stringent access controls, while less critical areas of the network can operate under less strict measures. Overall, segmentation is a fundamental strategy for enhancing security posture against a variety of cyber threats.