Data centers keep the world running, from banking and healthcare to streaming, transportation, and government services. When people think about data center security, they tend to picture firewalls, biometric readers, or surveillance rooms filled with screens. Increasingly, the most dangerous attacks start in the one place most data centers forget to protect, the buried physical cables carrying their most critical information. Racks, cables, conduits, and access points all create opportunities for tampering, disruption, or data theft.

This guide explores how data centers are rethinking security from the fence line to the fiber core.