OWASP Agentic Top 10 is now a real taxonomy — here's what "runtime enforcement" actually takes

OWASP published the Agentic Top 10 in december 2025: goal hijacking, tool misuse, identity abuse, memory poisoning, cascading failures, rogue agents, and four more. microsoft build 2026 shipped entra, purview, and defender integrations that address most of these at the identity and data-access layer.

colorado AI Act is now enforceable (june 2026). EU AI Act full enforcement hits august 2, 2026 — 47 days from today.

the timing isn't coincidental. every major cloud provider is now shipping agentic governance tooling because the regulatory deadline is close enough that enterprise buyers are asking for it by name.

what "runtime enforcement" means in the OWASP taxonomy

the OWASP Top 10 has two different kinds of risks. some are caught at build time — you audit your prompts, you review your tool configurations, you check your memory access patterns. those are important but they're not runtime.

the ones that matter at runtime: goal hijacking, tool misuse during execution, cascading failures mid-workflow. these happen after deployment. no amount of pre-deployment review catches them. they require enforcement that's active during the agent's execution, not before it starts.

microsoft's entra/purview/defender stack does this for identity and data access. it does not do it for the economic layer — what the agent is authorized to spend, in what context, for what purpose.

the spatial proof-of-presence layer

GridStamp addresses the gap between "what the agent is allowed to do" (covered by OWASP controls) and "whether the context at execution time matches what the authorization was based on." the proof-of-presence receipt captures execution context — spatial, temporal, resource state — and links it to the upstream authorization signal.

in the 14.55M ops fleet-sim we ran: 91% spoof detection, 3ms P99 under stress, 221 tests. the receipt format is verifiable without calling home — relevant when the regulatory requirement is an audit trail the regulator can inspect, not just a log file behind your API.

colorado is live now. EU AI Act is 47 days out. the window to get this in before the enforcement regime is active is closing.

dev portal: https://mnemopay.com