One manager, and their supervisor. Either the supervisor was negligent in doing their job, or supported the manager. HR should probably be more on the ball too

One manager, and their supervisor. Either the supervisor was negligent in doing their job, or supported the manager. HR should probably be more on the ball too. And implemented policies/procedures. There's never just one person who messes up. Kinda like how it's never just the Junior Dev's fault when they delete the production database.