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Command Line Practitioner (CLIP)
Build command-line fluency through Linux fundamentals, reconnaissance, scripting, credentials, and evidence.
CTF training
Get better at CTF.
Build practical command-line and cybersecurity skill across more than 200 hands-on levels. Practice Linux fundamentals, reconnaissance, exploitation, scripting, forensics, and incident analysis directly in the browser.
Practice broadly200+ hands-on levels
Move from shell fundamentals into web, network, reversing, exploitation, and forensics work.
Learn deliberatelyGuidance when useful
Use objectives, context, hints, and debriefs to understand the technique—not just recover a flag.
Test yourselfIndependent practice
Close the context panel and solve from the terminal, documentation, and available evidence.
The training library is available now. Structured course paths and credentials are in development.
Areas of practice
Build core skills, then choose a direction.
The library spans a shared command-line foundation plus offensive and defensive material. These working course paths organize skills you can begin practicing today.
Build outward
Command Line Operator (CLIO)
Practice scoped exploitation, privilege escalation, lateral movement, reporting, and accurate remediation.
Read the aftermath
Command Line Analyst (CLIA)
Work through network forensics, artifact recovery, incident reconstruction, and reproducible handoff.
Where this is going
Keep a record of the work you complete.
We are designing a verifiable course-completion record and a separate skills assessment. One records a finished course; the other evaluates independent performance.
Course completion
A record you can keep
A polished, verifiable PDF tied to a named, versioned course and the work required to complete it.
Independent assessment
A separate test of skill
A controlled challenge with unfamiliar tasks, clear evidence requirements, a human rubric, and an appeal path.
Pick a level and start solving.
Use the guidance while a technique is new. Close it when you are ready to work independently. Either way, the terminal is yours.