01 / Foundation
Your foundation · Free
Sentinel
Master the fundamentals of network defense, identity management, and core security principles.
Your first step into cybersecurity
Your free start
in cybersecurity.
Learn how cyber threats work and how to defend against them. Start Sentinel with a free JTF Passport.
- 59 lessons at your pace
- No experience needed
- No card. No course fee.
Knowledge with a direction
Start with the foundations.
Go deeper where it matters.
Learn the language, systems and decisions behind cybersecurity. CSTI brings structured lessons, guided exercise material and AI tutoring into the JTF learning network—so your next step is clear, wherever you begin.
Five learning paths
Find your starting point.
02 / Practitioner
Cloud & infrastructure
GridOps
Architect and defend enterprise cloud infrastructure, containers, and zero trust networks.
03 / Specialist
Defensive operations
ThreatOps
Hunt threats, analyze malware, investigate incidents, and build intelligence-driven defense programs.
04 / Specialist
Offensive security
RedForce
Master offensive security, penetration testing, exploit development, and adversary simulation techniques.
05 / Expert
Strategy & governance
ArchGuard
Lead security programs, manage enterprise risk, design resilient architectures, and communicate with executive leadership.
A clear learning journey
From your first lesson
to a record you can keep.
Choose your path
Start with Sentinel, or focus on the security work you want to understand.
Build your knowledge
Work through the lessons, guided exercises and questions at your pace.
Complete the assessment
Your full-course assessment is selected and graded by the learning platform.
Keep your record
Earn a verifiable course-completion record and choose whether to share it with JTF.
One connected network
Your learning belongs
in your bigger picture.
Sign in with JTF Passport. Keep Academy and CSTI learning in one place. With your permission, share verified course completions with your JTF Roster profile and JTFScore’s governed training inputs.
A CSTI completion record reflects self-paced study and assessment. Professional credentials, practical competence and JTF tiers follow their own evidence and review requirements.
JTF Passport
One sign-in for CSTI and the JTF network.
Academy + CSTI learning
Lessons, guided exercises and course assessments.
Your professional profile
Share course-completion evidence when you choose.
The Cybersecurity History Vault
Understand how
we got here.
Explore the events, ideas and incidents that shaped security—from early networks to today’s connected world.
Open the History VaultBegin with a stronger foundation
Your next step starts here.
CSTI Sentinel is free to start. Use your JTF Passport and make the first lesson your next move.
Start learning