Information Security Definitions

This glossary explains the meaning of key words and phrases that information technology (IT) and business professionals use when discussing IT security and related software products. You can find additional definitions by visiting WhatIs.com or using the search box below.

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  • C

    cold boot attack

    A cold boot attack is a process for obtaining unauthorized access to encryption keys stored in the dynamic random access memory (DRAM) chips of a computer system.

  • Common Body of Knowledge (CBK)

    In security, Common Body of Knowledge (CBK) is a comprehensive framework of all the relevant subjects a security professional should be familiar with, including skills, techniques and best practices.

  • Common Weakness Enumeration (CWE)

    Common Weakness Enumeration (CWE) is a universal online dictionary of weaknesses that have been found in computer software... (Continued)

  • computer exploit

    A computer exploit, or exploit, is an attack on a computer system, especially one that takes advantage of a particular vulnerability the system offers to intruders.

  • computer forensics (cyber forensics)

    Computer forensics is the application of investigation and analysis techniques to gather and preserve evidence from a particular computing device in a way that is suitable for presentation in a court of law.

  • conditional access (CA)

    Conditional access (CA) is a technology used to control access to digital television (DTV) services to authorized users by encrypting the transmitted programming.

  • content filtering (information filtering)

    On the Internet, content filtering (also known as information filtering) is the use of a program to screen and exclude from access or availability Web pages or e-mail that is deemed objectionable.

  • Content Scrambling System (CSS)

    Content Scrambling System (CSS) is a data encryption and authentication method used to protect digital versatile disk (DVD) movies from being illegally copied, distributed, and viewed from other devices, such as computer hard drives.

  • context-aware security

    Context-aware security is the use of situational information (such as identity, location, time of day or type of endpoint device) to improve information security decisions.

  • cookie poisoning

    On the Web, cookie poisoning is the modification of a cookie (personal information in a Web user's computer) by an attacker to gain unauthorized information about the user for purposes such as identity theft.

  • copyright

    Copyright is a legal term describing ownership of control of the rights to the use and distribution of certain works of creative expression, including books, video, movies, music and computer programs.

  • counterfeit detector pen

    A counterfeit detector pen is a felt tip pen containing an iodine solution that can be used to help identify computer-generated counterfeit bills.

  • cracker

    A cracker is someone who breaks into someone else's computer system, often on a network; bypasses passwords or licenses in computer programs; or in other ways intentionally breaches computer security.

  • CRAM (challenge-response authentication mechanism)

    CRAM (challenge-response authentication mechanism) is the two-level scheme for authenticating network users that is used as part of the Web's Hypertext Transfer Protocol (HTTP).

  • Crash Course: Spyware

    In general, spyware is any technology that aids in gathering information about a person or organization without their knowledge.

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