Arcana

Revealing what most agent builders miss.

Most teams building AI agents are one prompt injection away from a breach.
They hand autonomous agents broad permissions and static credentials, ignore privilege drift, and treat agentic systems like regular microservices. The result? Memory poisoning, uncontrolled tool use, and agent-to-agent attacks that traditional security tools were never designed to stop.

Arcana is the sharp, no-BS source on agentic security.

We expose the hidden risks and broken assumptions of securing autonomous AI agents and multi-agent systems — from authentication and session management to defending against prompt injection that actually executes and privilege escalation in production.
Every week we deliver the truths most agent builders miss: what’s actually failing in real deployments, which patterns are quietly dangerous, and what real security for agents looks like in 2026.
Who this is for

• Security engineers protecting AI agent deployments
• Teams building production multi-agent systems
• Anyone tired of vendor hype and generic “AI safety” content

If you want reality over reassurance, you’re in the right place.