Everyone throws the term 'end-to-end encryption' around like it solves everything. Most of the time it doesn’t. Here’s exactly what real E2EE requires, where it breaks, and how to tell the difference between the real thing and marketing theater.

Everyone says it. It feels true. It’s not. Here’s why surrendering your privacy hands strangers the keys to your life.

From Git commits to Bitcoin blocks, from TLS certificates to password hashes, SHA is everywhere. Most developers use it daily without understanding why it works, what actually breaks, and why you’re probably using it wrong.