Cloud Security Zero

Cloud Security Zero · Trust is a decisionA safer digital world for the next generation.

Cloud Security Zero is an independent, non-profit initiative bringing Zero Trust and AI together. As AI speeds up attackers and AI agents start acting for us, every person, device and agent should earn its access, and nothing should be left exposed to find.

Exposed services: 0

Zero Trust and AI, together

Go dark

AI makes scanning and exploiting the internet faster and cheaper than ever. The answer is to have nothing to find: connect people and agents to applications, never to networks.

Black Cloud, 2017

Agents earn trust too

AI agents are the newest untrusted actors. Like every person, device and workload, they should prove who they are and earn access on each request, based on what they are doing.

The dark arts of exploiting trust

Defend at machine speed

Attacks now move faster than people can think. Zero Trust gives AI clear, policy-based signals, so defences can spot and stop misuse just as fast.

Prompt manipulation, 2025

What we do

Open ideas and frameworks
Practical, vendor-neutral thinking on how Zero Trust applies to AI: agents, models, and the data and tools they touch. Shared freely.
Writing and talks
Articles, keynotes and workshops for security teams, leaders and conferences, to help organisations adopt AI without opening new doors for attackers.
Community
Bringing practitioners together to share what works, from replacing VPNs to governing agentic AI.
A safer world
Making the case beyond the security industry that trust must be earned, by people and by machines.
Tony Fergusson

Started by Tony Fergusson

Tony was among the first to run Zero Trust Network Access in production, and led the secure cloud transformation at Everllence that became a benchmark for Zero Trust architecture. He has spent 30 years in networking, security and IT leadership.

Cloud Security Zero began in 2016 as his blog on Zero Trust and going dark. Today it is an independent, non-profit initiative focused on bringing Zero Trust and AI together. The blog archive lives here; his newer articles and talks are on his personal site. Views here are personal and do not represent any employer.

Visit tonyfergusson.com

Get involved

Want to collaborate, invite a talk, or share how you are securing AI? Get in touch. Tony replies personally.

Get in touch