Understand
A complete written lesson — plain language first, precise terminology second, with worked examples.
Free, browser-based, no accounts
Learn it in the browser. Prove it on the exam.
Complete written lessons, hands-on labs you work directly on the page, live classroom presentations, and certification-aligned study guides. Nothing to download, nothing to install.
0courses
0published topics
0interactive labs
Hands-on labs on the page
Live classroom decks
THE APPROACH
Learn the system, not just the vocabulary.
Each topic connects a named concept to an architecture, a decision, a control, and the evidence needed to defend it.
Apply
Labs on the page: classify phishing emails, break weak ciphers, trace data through a model.
Defend
Study guides with the distinctions exams test, common traps, and retrieval practice.
TRY A PIECE OF A LESSON
How a machine actually learns.
Lessons here are built around things you can poke at. Click through the five stages — this diagram is from the first AI security topic.
Thousands of labeled examples
Everything starts with examples. A spam filter learns from real messages someone already marked “spam” or “safe.” If the examples are wrong or skewed, everything downstream inherits the problem.
50,000 emails, each labeled spam or safe