NDA: It is a contract through which the parties agree not to disclose information covered by the agreement. An NDA creates a confidential relationship between the parties, typically to protect any type of confidential and proprietary information or trade secrets. As such, an NDA protects non-public business information.
PUA: Potentially Unwanted Applications) are programs that, while not especially malicious, generally diminish the user experience by consuming valuable computer resources, tracking users, displaying advertisements, or allowing the installation of additional third party software. The PUA category provides users with increased insight and control over their computers by detecting applications that are not categorized as malware, but that users may not want installed on their computer or network.
AUP: An acceptable use policy (AUP) is a document stipulating constraints and practices that a user must agree to for access to a corporate network or the Internet.
DLP: Data loss prevention (DLP) is an approach that seeks to improve information security and protect business information from data breaches. It prevents end-users from moving key information outside the network. DLP also refers to tools that enable a network administrator to monitor data accessed and shared by end users.