What you are learning
Shieldhub is turning on GitHub security alerts and acting on findings. The teaching focus is Security (Dependabot, code scanning, secret scanning, security advisories).
Work in order. Early parts set vocabulary and environment; later parts assume the earlier checkpoints.
How to use these lessons
Read the goal, open the matching GitHub folder, complete the lab or exercises, then return for the explanation. If a command fails, check you are in the numbered folder first.
Parts in order
Each chapter below is one checkpoint in this track.