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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  • D

    drive-by pharming

    Drive-by pharming is a vulnerability exploitation method in which the attacker takes advantage of an inadequately unprotected broadband router to gain access to user data... (Continued)

  • DSO exploit (data source object exploit)

    A data source object (DSO) exploit is a form of spyware that takes advantage of data binding to gain access to the hard drive of a computer connected to the Internet.

  • dumpster diving

    Dumpster diving is looking for treasure in someone else's trash.

  • Duo Security

    Duo Security is a vendor of cloud-based two-factor authentication products.

  • Duqu (W32.Duqu)

    Duqu is a remote access Trojan (RAT) that is designed to steal data from computers it infects.

  • E

    Echelon

    Echelon is an officially unacknowledged U.S.-led global spy network that operates an automated system for the interception and relay of electronic communications.

  • EINSTEIN

    EINSTEIN monitors and analyzes Internet traffic when it moves in and out of U.S. federal computer networks.

  • electro-optical fingerprint recognition

    Electro-optical fingerprint recognition is a biometric technology that provides for the scanning, comparison, and identification of fingerprints without the traditional need for ink and paper.

  • Electrohippies Collective

    The Electrohippies Collective is an international group of hacktivists based in Oxfordshire, England, whose purpose is to express its displeasure with the use of the Internet "as a tool for corporate communications and propaganda.

  • Electronic Code Book (ECB)

    Electronic Code Book (ECB) is a mode of operation for a block cipher, with the characteristic that each possible block of plaintext has a defined corresponding ciphertext value and vice versa.

  • Electronic Signatures in Global and National Commerce Act (e-signature bill)

    The Electronic Signatures in Global and National Commerce Act (often referred to as the e-signature bill) specifies that in the United States, the use of a digital signature is as legally valid as a traditional signature written in ink on paper.

  • Elk Cloner

    Elk Cloner was the first computer virus known to have spread in the wild.

  • elliptical curve cryptography (ECC)

    Elliptical curve cryptography (ECC) is a public key encryption technique based on elliptic curve theory that can be used to create faster, smaller, and more efficient cryptographic keys.

  • email spam

    Email spam, or junk email, is unsolicited bulk messages sent through email with commercial, fraudulent or malicious intent.

  • email spoofing

    Email spoofing is the forgery of an email header so that the message appears to have originated from someone or somewhere other than the actual source.

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