The worldwide network security market surpassed $7 billion in Q1 2026, up 14 percent year-over-year, according to Dell'Oro Group.
The strongest signal in the data was not the headline number but the split, which pointed toward growth in cloud security over traditional tooling. SSE grew 22 percent and WAF grew 20 percent, outpacing physical firewall growth of 9 percent.
The divergence reflects an emerging architectural pressure in enterprise environments. As organizations deploy agentic AI, security teams face the challenge of governing not just human users but non-human actors, APIs, and automated workflows across distributed infrastructure. Physical appliances handle throughput and segmentation, but they were not designed to enforce consistent policy across that range of traffic types and environments.
The investment pattern suggests buyers are responding by layering cloud-delivered and application-level controls on top of existing appliance infrastructure rather than replacing it.
SSE addresses consistent access policy across users and WAF addresses the application front door where API and automated traffic is growing fastest. Both categories gain relevance as the number of non-human actors making network requests increases, which is the core dynamic agentic AI introduces.
