Definitions

• Ransomware : Ransomware is a type of malicious attack where attackers encrypt an organization's data and demand payment to restore access. Attackers may also steal an organization's information and demand an additional payment in return for not disclosing the information to authorities, competitors, or the public. (source)

• PsExec : PsExec is a light-weight telnet-replacement that lets you execute processes on other systems, complete with full interactivity for console applications, without having to manually install client software. (source)

• GPO : A Group Policy Object (GPO) is a virtual collection of policy settings. (source)

• ADCS : AD CS provides customizable services for issuing and managing digital certificates used in software security systems that employ public key technologies. (source)