It didn't prevent the abuse, even though it exposed it.
"Dubbed the "most dangerous hacker in the world," Mitnick was put in solitary confinement and prevented from using a phone after law enforcement officials convinced a judge that he had the ability to start a nuclear war by whistling into a pay phone, he said."
https://www.cnet.com/news/social-engineering-101-mitnick-and...
Remember how Kevin Mitnick had a trial with transparency and formal procedures to prevent abuse of authority?