Astrid Lindberg

Author

Security engineer at a Malmö identity management company, specialising in WebAuthn and FIDO2 implementation. Co-authored the passkey migration guide used by three Scandinavian banks.

securityauthapitesting

Articles by Astrid Lindberg(2)

Session hijacking prevention in Flutter web: CSRF, XSS, and secure cookie patterns

This article provides an in-depth exploration of session hijacking mitigation techniques in Flutter web applications, focusing on Cross-Site Request Forgery (CSRF), Cross-Site Scripting (XSS), and secure cookie implementations. It emphasizes security-driven practices throughout the development lifecycle, ensuring robust protection against common vulnerabilities.

Flutterweb securityCSRFXSScookies

22 July 2026

Hybrid search: combining BM25 and vector similarity for better RAG

Hybrid search fuses keyword-based BM25 ranking with dense vector similarity to deliver better retrieval than either method alone, especially for domain-specific corpora where exact terms matter alongside semantic meaning. This article covers the theory, implementation patterns, and tuning strategies for hybrid search in production RAG systems.

ragsearchbm25embeddingsretrieval

15 July 2026