Perl Security: 3. Reporting warnings
Reporting warnings with Perl >= 5.6.0

This previous behavior is still observed by Perl >= 5.6.0 - only now it is vastly enhanced

Warnings can now be lexically scoped and granularly controlled using the 'use warnings' pragma - Refer to 'perldoc perllexwarn' for more detailed information

Warnings can be registered as belonging to a module, and a module's warnings can be all set or unset.