Master Agents for
Defensive Security
Agentic attacks demand defense at the same speed.
Learn to build systems that extend the reach of your expertise.
Become the defender who
builds what comes next.
Turn the security expertise you already have into a defense that can keep working. Design the processes agents follow, define what they’re allowed to do, and use what you learn to improve the system.
I’ll teach you how to develop that capability to meet the scale of the challenges that lie ahead.
Build Your Own Agentic Defense
Start mastering agents for defensive security with my flagship, self-paced online course, designed specifically for defenders.
Follow a structured path from understanding agents to using them in your own environment.
Or start with the free lessons ›What’s included
- 127 lessons
- Hands-on labs
- Build It Yourself guides
- Lifetime course access
- Course updates included
- One-time purchase
How we teach
The instructor
Faan Rossouw
I’m a security researcher and instructor. I’ve taught thousands of defenders to find adversaries in network and endpoint telemetry, and earlier in my career I developed offensive security tooling and taught courses on that too.
When agents arrived, I went looking for a course that taught how to build with them from the foundations up. It didn’t exist, so I built my own agentic defense system and turned what I learned into AionSec: the course I couldn’t find.
What students say
Feedback from students in my courses and workshops.
One of the best training classes I've taken in years. As someone who has been using Agentic AI on a daily basis since late last year, I can confidently say this class is for all levels. The labs have a great flow. I paid for this class myself and I'm glad that I did.
The course is clear, well-structured, and presented with a strong, confident grasp of the material. If you want to learn agentic AI and apply it to security in a methodical and hands-on way, he's someone who can genuinely help you deepen your understanding and elevate your practice.
Faan's in-depth knowledge and his amazing way of explaining things in the KISS format makes complex topics genuinely accessible. I highly recommend his trainings and will definitely be attending more sessions.
Each lesson is well designed to bring students of all levels up to speed and make complex concepts digestible. His experience and passion impart a contagious desire for learning—fun and thoughtful while maintaining lightheartedness through high-level technical material.
that none
can walk but you.
Where does it lead?
Don't ask, walk!
The AionSec list
Take your first step to
mastering agents for defensive security
- $50 off With your code
Build Your Own Agentic Defense
$499$449 - Free guide PDF · 26 pages
Defense in the Age of Agents
- Newsletter Every two weeks
Every new article and video, in one email
Build Your Own Agentic Defense
Follow one intrusion from raw telemetry to an evidence-cited report, and learn how the system’s tools, skills and memory fit together.
- 127 lessons, written and on video, and 23 hands-on labs
- Lifetime access, with course updates included
- Your model, your key — frontier API or local open-weight
$499USD
- One-time purchase
- 14-day money-back guarantee
advanced technology
is indistinguishable
from magic.
Free lessons
Not ready for the course? Start learning.
Video + articleWhere a Security Agent’s Memory Begins
How a harness carries evidence and assessments through a run, preserves earlier states and decides what survives after it.
Video + articleInside the Skeleton of a Security Agent
A model call returns text. The engineering that turns it into a useful security agent happens around it: inputs, tools, boundaries and validated outputs.
Video + articleYour Prompt Is Not a Security Boundary
Instructions can guide a model. Real boundaries come from the checks, approvals and permissions that control what its tools can actually do.
Video + articleHow an Agent Decides What to Do Next
Think, act, observe: follow a tool request around the agent loop, and see how each result shapes the next question.
Video + articleWhat Is Threat Hunting?
Bring human judgment into detection, understand its limits, and see how agents can extend it.
Video + articleBuild Agents That Amplify You
Design collaboration, automate the work, amplify the defender, and use the right system for each job.
