AI agent security news recap: April to September 2026
29 SEPTEMBER 2026 · 5 MIN READ
- News
- Market
Six months of announcements from the vendors we score and from the standards projects they build on, grouped by what they mean for buyers.
NOTES · UPDATED SEPTEMBER 2026
AI security notes
The verdict
8 notes for security leaders and CIOs rolling out AI agents, newest first: practical guides to inventory, policy and proofs of concept, explainers on MCP, OWASP and pricing, and a recap of recent announcements. Each note lists its sources.
Longer notes from the editors on the practical side of AI agent security.
How to run a proof of concept for an AI agent security tool
29 SEPTEMBER 2026 · 4 MIN READ
- Buying
- How-to
A plan for testing two or three shortlisted tools on real devices, so the decision rests on what you saw rather than on what a page says.
Seven myths about AI agent security, and what the facts say
17 SEPTEMBER 2026 · 4 MIN READ
- Basics
Common assumptions about AI agents on employee devices, each checked against a public source.
Allow, ask or deny: how to write a policy for AI agent actions
9 SEPTEMBER 2026 · 5 MIN READ
- Policy
- How-to
A policy for AI agents is a list of actions and answers. Getting the middle answer, "ask", right is what lets a company approve agents widely.
Excessive Agency in the OWASP 2026 Top 10: what it means for AI agents
4 SEPTEMBER 2026 · 4 MIN READ
- Standards
- Policy
OWASP's 2026 list puts agent overreach near the top. Here is how that translates into controls on laptops and MCP servers.
How to inventory AI agents and MCP servers on employee devices
2 SEPTEMBER 2026 · 5 MIN READ
- Endpoint visibility
- How-to
A practical method for the first job in AI agent security: knowing what is installed, who runs it and what it can reach.
What the MCP 2026-07-28 specification changes for security teams
26 AUGUST 2026 · 5 MIN READ
- MCP
- Standards
The July 2026 revision is the largest change to the Model Context Protocol since it launched. Most of it is plumbing, but several parts touch identity, audit and control.
What AI agent security tools cost, and why no vendor publishes a price
6 AUGUST 2026 · 4 MIN READ
- Buying
- Pricing
Pricing is the one row every vendor on this site leaves blank. Here is what is published, and how to get numbers you can compare.