Spring Security Filter Chain — How Requests Flow Through

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/spring-security-filter-chain

SecurityContext and SecurityContextHolder — How They Work

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/security-context-security-context-holder

UserDetailsService and UserDetails — Custom Implementation

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/userdetailsservice-userdetails-custom-implementation

Session-Based vs Token-Based Authentication

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/session-vs-token-based-authentication

Password Hashing — BCrypt vs Argon2

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/password-hashing-bcrypt-vs-argon2

Authentication vs Authorization in Spring Security

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/authentication-vs-authorization-spring-security

@PreAuthorize vs @Secured vs @RolesAllowed

See full structured answer at https://interviewexplainer.com/spring-security-interview-questions/preauthorize-vs-secured-vs-rolesallowed

Spring Ecosystem·Interview Q&A

Spring Security & Identity interview questions

26+ curated questions with the same answer shape every time: quick recap, deep dive, pitfalls, and follow-ups. Coverage includes security fundamentals, authentication, authorization, jwt, and more.

26questions

11topics

1223difficulty

Open question 1 How to read this module

Suggested path

Read Spring Security & Identity from question 1 to 26

Topics follow a teaching order. Each answer ends with a clear Next question control so you can move forward without hunting the list.

1Start with question 1 — it sets up the rest of the module.
2Use Continue · Next question at the bottom of every page (and the arrows in the sticky bar when you scroll).
3Jump to any topic in the full catalog — every row is numbered in reading order (Q1–Q26).

Open question 1 Jump to Q1 in list Scroll to full catalog

About this page

Spring Security interviews test whether you understand the filter chain, not just the annotations. This module is an elevation arc: it opens with security fundamentals (authentication vs authorization, the filter chain), then authentication and authorization (the core flows). JWT and OAuth2 — the stateless and delegated models most production apps use — follow, then SSO and SAML. Security configuration, CORS and CSRF, and testing are the applied tier. It closes with comparisons and scenario-based questions.

Reviewed by senior engineers·Updated for 2026·Free · No sign-up required

Part ofSpring Ecosystem Application Security

High-signal Spring Security & Identity questions

Top 5

Full catalog

Every question, in reading order

Topics are ordered for learning. Within each topic, rows are numbered 1–26 globally so you always know where you are. Collapse topics if you want a lighter view — use Expand all when you need the full list again.

Full catalog · reading order

Spring Security & Identity

Numbers 1–26 follow the order we recommend — click any row to open the full answer, or use the sticky Next link at the bottom of each page to go Q1 → Q26.

26 questions·11 topics

All topics expanded

21Authentication Strategies: JWT vs Session vs OAuth2 vs SAMLHard8m

Continue your prep

Interviewers rarely ask Spring Security & Identity in isolation. These are the modules that most often come up in the same loop.

Most relevant next step11+ Q&A

Application Security & OWASP Interview Questions

Application security interviews test whether you can reason about threats, not just recite acronyms. This module opens with security architecture (the defense-in-depth model), then the OWASP Top 10 — the canonical vulnerability list every interviewer references. From there it builds outward: encryption (the math you must get right), secrets management (where keys actually live), secure coding (the patterns that prevent the OWASP issues), then verification — vulnerability scanning and security testing. It closes with compliance, the comparison canon, and scenario-based questions where the threats meet real code.

REST API & Spring MVC

Also useful33

Microservices Architecture

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Every Application Security module

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FAQs about Spring Security & Identity interview prep

QHow many Spring Security & Identity interview questions are on this page?

This module bundles 26+ Spring Security & Identity interview questions, grouped by 11 topics. Every answer follows the same structure — one-liner summary, structured deep-dive, common pitfalls, and realistic follow-ups an interviewer might ask.

QIs this Spring Security & Identity content up to date for 2026?

Yes. Every answer is reviewed by senior engineers and updated for current best practices, version-specific APIs, and the scenario questions hiring managers are asking today.

QWhich difficulty level are these Spring Security & Identity questions?

The set spans all three levels — 1 easy, 22 medium, and 3 hard questions. Junior candidates should focus on the conceptual questions; senior candidates should drill the scenario and trade-off questions in every topic group.

QWhich question should I read first?

Start with question 1 in the ordered list below ("Spring Security Fundamentals") — it is the recommended entry point. Then use the Next question link at the bottom of each answer page to read straight through to Q26.

QWhat else belongs in a Application Security prep plan?

Spring Security & Identity is one module inside the broader Application Security hub — open it to drill the full set of sibling modules with the same structured answer format.