Developer Security Blog
In-depth developer guides, cryptographic architectures, and security best practices from security practitioners.
The Anatomy of a JWT Leak: Real-World Auth Mistakes I've Seen
A first-person case study of a real-world JWT leak. Learn how cross-site scripting (XSS), localStorage flaws, and lack of revocation compromised a client's system.
How I Accidentally Leaked a Production API Key (And What I Learned)
A first-person account of pushing an API key to a public GitHub repository. Learn how secret scanning works, git history purging, and API key management best practices.
Why We Moved Our Cryptography to WebAssembly (Wasm)
A comprehensive analysis of client-side cryptography performance. Discover why WebAssembly (Wasm) outclasses pure JavaScript for heavy calculations like hashing and key generation.
The Developer's Guide to Password Salting & Hashing
An in-depth developer guide to password security. Learn why plain hashes fail, how rainbow tables work, and how cryptographically secure salts protect user credentials.
Man-in-the-Middle Attacks: How HTTPS & HSTS Protect App Data
A real-world analysis of Man-in-the-Middle (MITM) attacks on public networks. Understand how HTTPS, TLS handshakes, and HTTP Strict Transport Security (HSTS) headers protect APIs.
AES vs RSA: Which Encryption Should You Actually Use?
A comprehensive comparison of symmetric vs asymmetric encryption. Learn how AES and RSA differ in speed, keys, and security, and how modern TLS combines both in a hybrid model.
Why You Should Never Use MD5 for Password Hashing
MD5 is completely broken for security purposes. Explore mathematical collisions, GPU brute-force speeds, and how to safely implement Bcrypt or Argon2id work factors in modern systems.
Top 5 JWT Security Mistakes and How to Avoid Them
JSON Web Tokens (JWTs) are popular but notoriously easy to misconfigure. Avoid standard vulnerabilities like alg:none bypasses, weak HMAC keys, unsafe local storage, and missing expirations.
Client-Side Cryptography: What You Can (and Can't) Do Safely
Running cryptography in the browser comes with unique challenges. Understand the boundary of zero-knowledge client architectures, WebCrypto security, and the danger of key exposure.
Hashing vs. Encryption: The Crucial Differences Explained
Never confuse these two core concepts again. We break down the mathematical definitions, key requirements, and distinct architectural use cases for one-way hashes and two-way ciphers.