[perlgeek]

Where does it say on that page that the hardening is not making them world-readable?

> If a compiler is found, execution should be limited to authorized users only (e.g. root user).

[viraptor]

Unless you also mount some partitions noexec, making things not executable is useless. And if you have access to python/perl/ruby, you can construct any binary in memory anyway. And that's assuming someone's targeting some vulnerability chain which uses the compiler which is a stretch anyway.