What characterizes horizontal defense in depth?

Horizontal defense in depth refers to the implementation of multiple layers of security controls across different access points within an organization. This approach aims to provide a more robust security posture by ensuring that if one layer of defense is breached, other layers are still in place to provide protection. By placing controls at various access points, such as network perimeters, endpoints, and user interfaces, organizations can effectively mitigate risks and deter attackers.

This strategy contrasts with vertical defense in depth, which focuses on strengthening security at a single access point or layer, often through various levels of privilege escalation or resource protections. In horizontal defense, the emphasis is on a distributed and multi-faceted approach to security that enhances overall resilience against potential threats.