Lion Cipher Lab
Your first Python script for security
- AppSec / DevSecOps
- Beginner
- ~30 min
- Free · no account required
Why it matters
The single most useful thing a beginner can learn about code is not a language — it's the realization that a short script can do a real, repetitive security task for you, correctly, every time, in seconds. Checking a file's hash, scanning a folder, reformatting a log: these are the small chores that fill a security worker's day, and each one is a few lines of Python away from being automatic. You are not trying to become a software developer here. You're picking up automation literacy: enough to read a script, understand it, run it, and change it — which is exactly what turns "I should learn…
What you'll learn
- Python basics
- reading and running a script
- hashlib
- automating a hashing task
- command-line arguments
- terminal literacy
Steps in this lab
- The whole idea: a few readable lines can do a security chore for you
- Confirm Python is on your machine — or install it
- Two ways to run Python — a quick prompt, and a saved script
- Write the script — a SHA-256 file hasher in nine lines
- Run it, and read every line
- What you just proved — and where to point this next