Defend LLM apps against prompt injection with trust boundaries, layered controls, testing, monitoring, and incident response
4 sections · 8 lessons
Define the injection threat in OWASP 2026 terms and trace how untrusted content becomes model instruction through direct and indirect paths.
2 lessonsBuild a defensible prompt and tool architecture, then apply layered controls that reduce blast radius across input, context, and output stages.
2 lessonsBuild an OWASP mapped test suite and validate guardrails and secure patterns against real injection attempts, including what they stop and miss.
2 lessonsMonitor injection signals, control drift, and incident flow so attacks can be classified, contained, fixed, and prevented from recurring.
2 lessonsPrompt injection is a direct threat to LLM applications because untrusted text can be treated as instruction and pushed through prompts, tools, retrieval, and output paths. This course builds an advanced, security focused understanding of how those attacks work and how to contain them across the application stack. Learners leave with a practical model for designing controls, validating them against attack cases, watching for drift, and handling incidents in a way that supports compliance and remediation.
The course covers OWASP Top 10 for LLM Applications 2026 mapping, direct and indirect injection paths, prompt and tool trust boundaries, and defense in depth across ingestion, retrieval, and response stages. It also covers OWASP mapped test planning, guardrails, secure coding patterns, telemetry, review cadence, and incident to fix remediation.
From project managers and operators to founders, analysts, and teams adopting AI, Fenzo is for people who want to get better at the work they already do.
Anything from using AI for project planning and analysis to improving workflows, decision-making, communication, and delivery. If you can describe the skill or task, Fenzo can build a course around it.
Yes. Tell Fenzo what you do, what you’re trying to accomplish, and where you’re stuck, and Fenzo will shape the course around your role, your goals, and the work you actually have to do.
No. Fenzo adapts to your starting point, so you can begin with the fundamentals or jump straight into more advanced work.
Yes. Fenzo for Business puts the whole team on one plan — shared seats, courses you can assign, and reporting on who has finished what.
See Fenzo for BusinessYou start by describing your goal or taking a short skill benchmark. Fenzo uses that context to identify gaps and shape the learning experience around them.
Yes, Fenzo works in your mobile browser.
Something to operate in every section.
Three findings from decades of learning research shaped how every Fenzo lesson is built.
Average pass rate · Freeman et al., PNAS 2014
What the science says
Students in lecture-only classes are 1.5× more likely to fail.
How Fenzo does it
Every Fenzo lesson is interactive. No passive reading or watching, ever.
You work through itAI does it for you
Skill retention over time · with vs. without practice
What the science says
Offloading thinking to AI erodes the very skills you’re trying to build.
How Fenzo does it
Fenzo makes you do the thinking — guided, but never done for you.
Retrieval practiceRe-reading
Long-term recall · retrieval vs. re-reading
What the science says
Recalling information beats re-reading it for building durable understanding.
How Fenzo does it
Lessons weave in quizzes and recall prompts, so it sticks.