Security software, threat detection, identity management, and data protection.
Network Security
Firewalls and network tools blocking unauthorized access and threats
The field
At a glance
Definition
Firewalls and network tools blocking unauthorized access and threats
Technologies
Next-generation firewalls inspect traffic at the application layer. Micro-segmentation limits lateral movement within networks. Cloud-delivered security (SASE/SSE) protects distributed workforces. Network detection and response (NDR) uses AI to identify anomalous traffic patterns. SD-WAN integrates networking and security functions.
Applications
Next-gen firewalls inspect and filter application-layer traffic. Micro-segmentation prevents ransomware lateral movement. SASE provides secure access for remote workers. NDR detects data exfiltration and command-and-control communications.
Market and funding
The global network security market exceeded $25 billion in 2025. Every organization with a network needs protection.
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