About PhilipWalley.com

I've spent twenty-five years in enterprise tech, the last ten in cybersecurity at Zscaler, Cisco, and Cato Networks, working across SASE, Zero Trust, and secure access as those went from emerging ideas to enterprise standard. Most of that time was spent inside buying cycles, working with security architects, network and IT teams, CISOs, and the people who fund the work.

Beyond the GTM and product marketing side, I build with AI hands-on. Multi-provider LLM architecture, prompt systems, agentic workflows, and MCP integration. That experience shapes how I evaluate vendor claims and where I push on the architecture.

I write about AI security, Zero Trust, SASE, and the architecture decisions that matter when enterprise security gets complicated. Some posts cover established ground, like secure remote access and network segmentation. Others get into newer territory: private AI, agentic workflows, and what it means for security when software starts taking action on behalf of people.

Enterprise security now includes models, agents, prompts, connectors, and data flows alongside the users, devices, and networks it always covered. The trust, access, identity, visibility, and control questions that follow are harder and less settled than most vendors will admit. Much of what is written about these topics is vendor-driven or abstract. This site is meant to be neither.

It is a place for practical analysis, architectural thinking, and a plain-language perspective on where cybersecurity is going, written by someone who works in it.

Find me on LinkedIn.