Thank God the week 233 rants are over - was getting sick of elitist internet losers.

The worst security bug I saw was when I first started work as a dev in Angular almost year ago. Despite the code being a couple of years old, the links to the data on firebase had 0 rules concerning user access, all data basically publicly available, the API keys were uploaded on GitHub, and even the auth guard didn't work. A proper mess that still gives me the night spooks to this day.