It's a play on the name "Scheme" and "Schemers" which was continued by the "Racket" and "Racketeers" name. There's something of a history of naming things like this in the LISP community. Wikipedia says:

"Scheme was originally called 'Schemer', in the tradition of other Lisp-derived languages like Planner or Conniver."

Your reaction is, however, valid. People outside the Scheme community and it's closely related communities are unlikely to know this etymology.

I just find it so amusing, personally. I like it. It fits in with the security theme relatively well, too.