OpSecX is an OpenSecurity initiative focused on practical application security and offensive security education. Our courses are developed by security practitioners around the tools, techniques, and decisions used in real systems.
Practical by design
Courses combine the fundamentals needed to understand a security problem with exercises that show how it appears in practice. The aim is to build skills you can apply, not simply complete a collection of slides.
Learn at your own pace
Work through lessons when it suits you and resume from where you stopped. Your progress is tracked across each enrolled course.
Direct instructor support
When a lesson raises a question, you can contact the course instructor through the OpSecX messaging platform and keep the conversation connected to your learning.
Verifiable certificates
After completing a course, you receive a certificate of completion with a public verification link. This allows employers and other third parties to confirm that the certificate was issued by OpSecX.
Courses taught by practitioners
OpSecX instructors bring experience from application security, security research, open-source security tooling, and professional training. Each course is built and taught by someone familiar with the subject beyond the classroom.
Start learning
Browse the course catalog to compare available courses, lesson counts, duration, instructors, and pricing.