Vanguard Integrity Professionals, founded in 1986, is an independent provider of enterprise security software, professional services, and education focused primarily on IBM mainframe (z/OS) environments. The company's core offerings address security and regulatory compliance challenges for organizations operating IBM z/OS systems, with particular expertise in RACF (Resource Access Control Facility), ACF2, and Top Secret security managers. The company's software portfolio includes solutions such as Vanguard Configuration Manager, an automated baseline configuration scanner that tests and assesses compliance with NIST National Checklist Program (NCP) guidelines for IBM z/OS and RACF environments. Their services span professional services consulting, managed services, penetration testing, and security education through their zSecurity University platform and RACF User Group (RUG) communities. Vanguard serves customers across financial services, insurance, healthcare, education, communications, utilities, transportation, retail, and government sectors. Their client base includes large financial institutions, insurance companies, government agencies, and retailers that rely on mainframe infrastructure for mission-critical operations. In addition to software and services, Vanguard hosts an annual security and compliance conference (VSC Conference) and participates in industry events such as SHARE. The company also offers cloud and enterprise security solutions alongside its core z/OS focus. All products are developed and supported in the United States.