Today's networked resources extend far beyond the office, making it harder to control devices and define a user. The pandemic has made us realize that we need a new approach to network security. Modern network security methods can prevent business disruption by using techniques such as Zero Trust Network Access (ZTNA) and Endpoint Detection and Response (EDR). The traditional castle-and-moat paradigm of the network perimeter is no longer relevant due to device diversity, flexible workforces, and cloud services. Network entry points are proliferating, making it harder to secure networks. Cyber criminals' sophistication has increased, with social engineering being a key attack method. To combat this, organizations need to think like their adversaries and layer multiple security technologies. ZTNA assumes malicious intent behind every network connection, while EDR can detect generic malware quickly. The human element is just as important as the technical element in preventing attacks. Defense in depth is the best protection, with micro-segmentation and software-defined perimeters reducing the impact of a successful breach.