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A PDF file may be encrypted, for security, in which case a password is needed to view or edit the contents. PDF 2.0 defines 256-bit AES encryption as the standard for PDF 2.0 files. The PDF Reference also defines ways that third parties can define their own encryption systems for PDF.
A security referent is the focus of a security policy or discourse; for example, a referent may be a potential beneficiary (or victim) of a security policy or system. Security referents may be persons or social groups, objects, institutions, ecosystems, or any other phenomenon vulnerable to unwanted change by the forces of its environment. [3]
An example of a physical security measure: a metal lock on the back of a personal computer to prevent hardware tampering. Computer security (also cybersecurity, digital security, or information technology (IT) security) is the protection of computer software, systems and networks from threats that can lead to unauthorized information disclosure, theft or damage to hardware, software, or data ...
Information security is the practice of protecting information by mitigating information risks. It is part of information risk management. [1] It typically involves preventing or reducing the probability of unauthorized or inappropriate access to data or the unlawful use, disclosure, disruption, deletion, corruption, modification, inspection, recording, or devaluation of information.
Security management is the identification of an organization's assets i.e. including people, buildings, machines, systems and information assets, followed by the development, documentation, and implementation of policies and procedures for protecting assets.
Information security standards (also cyber security standards [1]) are techniques generally outlined in published materials that attempt to protect a user's or organization's cyber environment. [2] This environment includes users themselves, networks, devices, all software, processes, information in storage or transit, applications, services ...
Human security offers a critique of and advocates an alternative to the traditional state-based conception of security. [39] Essentially, it argues that the proper referent for security is the individual and that state practices should reflect this rather than primarily focusing on securing borders through unilateral military action.
Jack Nelson-Pallmeyer offers a seven-characteristic definition for 'national security state' as where the military and broader national security establishment, e.g., exert influence over political and economic affairs; hold ultimate power while maintaining an appearance of democracy; are preoccupied with external and/or internal enemies; define ...