They still exist under the Pinkerton name, they’re just a subsidiary of Securitas AB:

https://en.wikipedia.org/wiki/Pinkerton_(detective_agency)

https://pinkerton.com/

Yes, people realizing that for themselves was the intent of my link. This discussion about trivia we're having right now is the only mojo left in the bottle.

It's the same parent company as the security guards at your local shopping mall. Pinkerton is like the "geek squad" brand of security.