They can offer security personnel real expertise in dealing with an intrusion.
A penetration test Certification should be done without informing workers and will allow management to check whether or not its security policies are truly effective.
A penetration test Certification can be imagined much like a fire drill. It will uncover aspects of a security policy that are lacking. For example, several security policies provide a lot of focus on preventing and detecting an attack on management systems but neglect the process of evicting an attacker.