Red teaming is the practice of analyzing a security mechanism from the standpoint of an external attacker or adversary. A red team is a group of third-party penetration testers that detects vulnerabilities in your physical security systems or cyber networks. Utility executives should be educated and fully understand the inputs and information that a red team exercise will provide. Utilities must protect themselves from this information and the security results from getting into the wrong hands. Be prepared to hear an outsiders perspective — the good, the bad, and the ugly.”]
Source: https://www.csoonline.com/article/3094112/security-from-the-outside-looking-in.html