Ruby itself did have something akin to this known as SAFE levels, which prevented IO, exiting the program, etc: https://ruby-hacking-guide.github.io/security.ht

Ruby itself did have something akin to this known as SAFE levels, which prevented IO, exiting the program, etc: https://ruby-hacking-guide.github.io/security.html https://ruby-hacking-guide.github.io/security.html Unfortunately, it seems like it's been removed since Ruby 2.1: https://bugs.ruby-lang.org/issues/8468 https://bugs.ruby-lang.org/issues/8468