Using Unicode variation selectors to hide arbitrary data — even runnable JavaScript — inside a single character or variable name, completely invisibly.

A small Rust trick: destructure newtypes like UserId(u64) directly in function parameters to avoid scattering .0 and .inner() calls across your code.

The common footguns of AES-CBC: why encryption alone isn't enough, plus padding oracle and timing attacks, IV handling, and why AEAD modes are safer.

A step-by-step guide to storing passwords securely: from plaintext and encryption to hashing, salting, slow hashes like bcrypt, and passwordless SSO.

How Rust implements generics through monomorphization: the performance wins, the binary-size and compile-time costs, and a trick to keep code bloat down.