Free freezes and settings that stop identity theft and cut off data sharing at the source. Most take a few minutes each and last for years.
Tick each step when it's done. Checkmarks are saved only in this browser. Every link goes to the official site; these are all free, so skip any paid add-ons they offer.
California's free DROP portal sends one deletion request to every registered data broker at once. Other states don't have this yet; see your rights for what yours offers.