In Web site security terminology, the word defacement is most often used to describe the changing or defacing of a Web page or Web site by an unauthorized individual or process, usually a hacker.

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  • default

    A value or setting that a device or program automatically selects if you do not specify a substitute. For example, word processors have default margins and default page lengths that you can override or reset. The default drive is the disk drive the computer accesses unless you specify a different disk drive. Likewise, the default […]

  • default gateway

    (1)The gateway in a network that a computer will use to access another network if a gateway is not specified for use. (2) In a network using subnets, the router that forwards traffic to a destination outside of the subnet of the transmitting device.

  • defragment

    To optimize a disk by unfragmenting files. See under fragmentation.

  • degauss

    To remove magnetism from a device. The term is usually used in reference to color monitors and other display devices that use a Cathode Ray Tube (CRT). These devices aim electrons onto the display screen by creating magnetic fields inside the CRT. External magnetic forces — such as the earth’s natural magnetism or a magnet […]

  • degrees of freedom

    In biometrics it is a measurement used to determine how unique biometric data is.

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