Fidelis Security is a company that provides cloud security and cyber defense solutions. It offers Fidelis Elevate, an extended detection and response (XDR) solution that delivers network security, deception, and active directory protection; and Fidelis Halo, a cloud-native application protection platform (CNAPP) that automates security and compliance operations. The company caters to defense, government, healthcare, finance, education, and other industries.