SecurityContextHolder #SpringSecurity

SecurityFilterChain over WebSecurityConfigurerAdapter Spring Security now favors SecurityFilterChain for a more flexible and component-based security configuration. #SpringBoot #SpringSecurity #Java

Spring Security 7 makes Lambda DSL the standard, offering cleaner, more readable configurations with less boilerplate and better alignment with modern Spring Boot applications. #SpringSecurity #SpringBoot #Java #BackendDevelopment

🚀 Spring Boot tip: With Spring Boot and Spring Security, you can secure endpoints easily. #SpringBoot #SpringSecurity

Today I defeated the final boss of frontend-backend integration: The CORS Error. 🛡️🌐 I learned how browsers use Cross-Origin Resource Sharing to protect users and how to properly configure @SpringSecurity to "allow" my frontend origin. #BuildInPublic #Java #SpringSecurity

JWT Spring Security still confusing you? This clean authentication flow finally made it click for my whole team: Security pros – one config you ALWAYS double-check before going live? Reply! 👇 #SpringSecurity

Setting up OAuth2 in Spring Boot? This clean flow diagram saved me from so many auth bugs: Security done right means fewer 4xx headaches in prod. What’s your OAuth horror story? Reply! 👇 #SpringSecurity

#Spring: risolte nuove vulnerabilità, tra cui una con gravità “critica” e due “alta”, in #SpringSecurity e #SpringAuthorizationServer Rischio: 🟠 Tipologia: 🔸 Authentication Bypass 🔸 Privilege Escalation 🔗 acn.gov.it/portale/en/w/riso… 🔄 Aggiornamenti disponibili 🔄

Spring Security reveals 7 flaws, including a critical 9.6 CVSS vulnerability in version 7.0. From auth bypass to X.509 impersonation, upgrade to 7.0.5 now. #SpringSecurity #InfoSec #CyberSecurity #Java #CVE202622752 #AuthBypass #PatchAlert securityonline.info/spring-s…

I’ve been MIA for a minute, but it’s time to get back to the build. 💻 I’m officially diving into Spring Security. My plan is to document the progress, the breakthroughs, and the "why is this 403-ing?" moments right here. Buckle up. 🔐 #BuildInPublic #SpringSecurity #Java

Be honest… are you still relying on just a password in 2026? 😅 I know I was—until Spring Security 7 dropped native MFA support. No more custom filters or third-party hacks.Just slap on @ EnableMultiFactorAuthentication, require password OTT (or whatever factors you need), and Spring handles the rest intelligently. It even auto-redirects users to complete missing factors. Game changer. Who else is finally killing password-only logins? Drop a 🔥 if you’re in #SpringBoot #SpringSecurity

Password alone in 2026? 😅 Come on, we all know that’s asking for trouble. Spring Security 7 just dropped proper built-in MFA support — and it’s actually clean and flexible. No more fighting with custom filters. Just annotate, require your factors (password OTT, X509, whatever), and you’re done. Leveling up your app’s security has never been this straightforward. Full guide here 👇 baeldung.com/spring-security… #SpringBoot #SpringSecurity #MFA #Java

Spring Security JWT in microservices (real pitfalls) 
JWT Spring Security sounds simple… until tokens leak or you can’t revoke them 👀 My production setup: RS256 signing (not HS256) Short expiry refresh tokens @PreAuthorize on controllers Learned the hard way with token revocation. Stateless but controllable. #SpringSecurity #Microservices

Spring Securityって、なんで勝手に全部ブロックしてくるの？ →理由を調べたら“関東軍”と同じ構造だった話。 初心者でも理解できるように、かなり噛み砕いて解説しました。 #SpringSecurity #Java #エンジニア #プログラミング #ITあるある #note note.com/machi_fushiduki/n/n…

A critical 9.1 CVSS flaw in Spring Security (CVE-2026-22732) fails to write HTTP headers, exposing Java apps to severe data leaks. Update immediately. #SpringSecurity #CVE202622732 #CyberSecurity #JavaSecurity #InfoSec #Vulnerability #DataLeak #AppSec securityonline.info/critical…

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More to see at @devnexus: Ever wanted to check if a secured endpoint works? In @intellijidea, you can temporarily unlock secured endpoints during local debugging. No need to modify the @springsecurity config. Reduce the risk of committing security changes and test faster.

Why OpenFeign Is a Game-Changer in Spring Boot Microservices ⚡ #OpenFeign #SpringBoot #Microservices #SpringBootMicroservices #JavaBackend #BackendDevelopment #ServiceDiscovery #Eureka #LoadBalancing #Resilience4j #CircuitBreaker #SpringSecurity #DistributedSystems

I'm honored to be speaking with @starbuxman at @devnexus about Bootiful @SpringSecurity For additional information see devnexus.org/events/bootiful… I hope to see you there! #SpringSecurity #Spring #Java #devnexus

個人的には 8→21や25でつまづくところは、ランタイムやコンパイラの問題はクリアできるんだけど、フレームワークのバージョン違いで動きが違うどころか、実装方法も変わるところですかね な、SpringSecurity。