perimetersäkra

Perimetersäkra is a term used to describe the process of securing the boundary of an area or system to prevent unauthorized access or intrusion. Derived from the Swedish words perimeter and säker (safe), the term is used in security planning to denote actions taken to protect the outer edges of facilities, properties, or information environments.

In physical security contexts, perimetersäkra involves establishing layered defenses around a defined space. Typical measures include fences or walls, controlled entry points with access control systems, surveillance such as cameras and lighting, intrusion detection sensors, alarms, and regular security patrols. Risk assessments identify critical zones, vulnerabilities, and the required level of protection, guiding the design of physical barriers and response procedures.

In information technology and cyber security, perimetersäkra refers to protecting the network boundary and data assets from external threats. Measures may include firewalls, intrusion prevention systems, intrusion detection systems, segmentation of networks, VPNs for remote access, multi-factor authentication, and monitoring. As threats evolve, many organizations combine perimeter security with internal controls and zero-trust approaches rather than rely solely on a strong outer boundary.

Implementation involves planning, budgeting, and ongoing management. Key steps include asset identification, risk assessment, defining security levels for zones, selecting appropriate technologies, regular testing and drills, and compliance with applicable standards and regulations. The concept of perimeter security continues to adapt in response to cloud services, mobile work, and distributed architectures.