DEM10 / Getty Images The days of perimeter security acting as the core of cybersecurity defenses are long gone. No organization would be caught without firewalls and antivirus scanners to catch low-sophistication attacks, but the real battle to protect the network has moved to the realm of identity and access management (IAM). Perimeter security has lost importance because organizations no longer have much of a hardware perimeter. Most have moved to the cloud and are rapidly adding apps and services as needed to support their employees and customers in the new world of always on, always available connectivity. While this situation has made most organizations more agile and efficient, it has also exposed them to considerable risk.