Build practical web security judgment by finding, fixing, and preventing the ten risks in one running application
Explain the 2025 risk taxonomy by relating its ten risks to trust boundaries and attacker goals in a running application.
Implement authorization checks, secure configuration, dependency controls, cryptographic protections, and injection defenses in application code.
Analyze missing design controls and apply rate limits, business-rule validation, secure session handling, and account-protection patterns.
Use signatures, checksums, safe deserialization, and restricted trust boundaries to reduce update and data-tampering risks.
Create structured audit logs, define alert conditions, and test that failures become controlled responses without exposing secrets or account existence.
4 sections · 11 lessons
Frame the 2025 risk taxonomy by locating attacker goals and trust boundaries in one running web application.
1 lessonTrace common weaknesses through application code and its surrounding configuration, dependencies, cryptographic handling, and input boundaries, then apply and verify practical safeguards.
5 lessonsExamine missing design controls and authentication weaknesses, then add guardrails for business rules, automation, rate limits, sessions, and account-protection behavior.
2 lessonsBuild protections for trusted updates and data, actionable security telemetry, and controlled exceptional behavior that avoids fail-open responses and information leaks.
3 lessonsThe OWASP Top 10:2025 provides a shared map of major web application risks, but useful security work requires connecting that map to trust boundaries, code, and attacker goals. This course builds beginner-friendly skill in recognizing vulnerable behavior, applying server-side defenses, and verifying safer outcomes across one running application. You will leave with a practical framework for prevention, testing, logging, and controlled failure handling.
The course covers the ten 2025 web application risks, including authorization, configuration, dependencies, cryptography, injection, design, authentication, integrity, logging, and exceptional conditions. It also covers vulnerable code, defensive implementation, verification, and prevention within a single running application.
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.