Praetorian Security Group, LLC | 36 followers on LinkedIn. Praetorian Security Group is an independent managed security services provider specializing in two business areas: outsourcing of security operational services and information assurance assessments. For companies that are ready, the Praetorian Security Assessment Program is among the most challenging practical security assessment on the market, built upon assessing the capabilities of organizations with a mature security program, the best features of industry wide standards, and a focus on finding the right practices for each organization.