The hard shadow team is one of the attack methods used in the information security field. Unlike regular shadow IT, this attack method requires more advanced and specialized knowledge, and is intended to leak information to target organizations or intrude into systems. Hard Shadow Teams are sometimes internally organized to actually test security vulnerabilities, but typically operate in a way that external experts conduct penetration testing against the organization. The purpose of the Hard Shadow Team is to accurately assess an organization's security level and identify vulnerabilities, encouraging the organization to implement stronger security measures.