Spring Security 7 Crash Course

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Most developers use Spring Security every day and still can't explain how it actually works.

I don't blame them. The docs are dense, the diagrams are confusing, and most tutorials just tell you to copy a SecurityConfig and hope for the best.

So I recorded a full Spring Security 7 crash course - and made it free.

In ~1.5 hours, you'll go from "it just works somehow" to actually understanding the internals:

→ The security filter chain (what really happens before your controller runs)

→ Form Login, end to end

→ Basic Auth as a stateless API

→ The JSESSIONID cookie and how sessions get hijacked

→ CSRF — what it is and when to disable it

→ The Authentication Manager, providers, and DAO provider

→ Custom users with UserDetailsService

→ Why your login fails even with the correct password (the password encoder trap)

Built on Spring Boot 4 and Java 25. Source code and diagrams included.

If you can confidently implement and explain security, you stand out — in code reviews, in interviews, and on your CV.

Watch it free 👇

What part of Spring Security trips you up the most? Drop it below 👇

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