BT402 Handouts PDF GETCAREERALERT.COM

BT402 Handouts PDF

The operating system can then use this information during each login procedure (a sequence of transactions in which the user establishes initial contact with a computer’s operating system) to control access to the system. Accounts are established by a person known as the superuser or the administrator.  BT402 Handouts PDF This person gains highly privileged access to the operating system by identifying him- or herself as the administrator (usually Auditing software may also identify activities within a user’s account that does not conform to that user’s past behavior, which may indicate that an unauthorized user has gained access to that account.

BT402 Handouts PDF

BT402 Handouts PDF
BT402 Handouts PDF

(It is unlikely that a user who traditionally uses only word processing and spreadsheet software will suddenly begin to access highly technical software applications or try to execute utility packages that lie outside that user’s
privileges.)  BT402 Handouts PDF Another culprit that auditing systems are designed to detect is the presence of sniffing software, which is software that, when left running on a computer, records activities and later reports them to a would-be intruder.

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An old, well-known example is a program that simulates the operating system’s login procedure.  BT402 Handouts PDF Such a program can be used to trick authorized users into thinking they are communicating with the operating system, whereas they are actually supplying their names and passwords to an impostor.

They select passwords that are relatively easy to guess (such as names and dates), and they share their passwords with friends, they fail to change their passwords on a timely basis, and they subject offline mass storage devices to potential degradation by transferring them back and forth between machines, and BT402 Handouts PDF  they import unapproved software into the system that might subvert the system’s security.

BT402 Handouts PDF
BT402 Handouts PDF

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