The glossary below contains many of the terms you will find in common use throughout the Symantec Security Response website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.


To start a program or application. In pcAnywhere, the host computer is launched so that a remote computer can call it and begin a remote control session.

In Symantec pcAnywhere, an error-checking procedure in which the number of 1s must always be the same (either even or odd) for each group of bits that is transmitted without error. In typical modem-to-modem communications, parity is one of the parameters that must be agreed upon by sending and receiving computers before transmission can occur.

In Symantec pcAnywhere, an extra bit used in checking for errors in groups of data bits transferred within or between computers. In modem-to-modem communications, the sending computer adds a parity bit to each group of data bits, each of which represents a single character. The setting of the parity bit depends on the type of parity used. With even parity, for example, the parity bit is set to 1 whenever it is needed to make the total number of 1s (data bits plus parity bit) an even number. The receiving device counts the number of 1s in each arriving group of data and parity bits; if the number is odd when it should be even, the device can assume that one of the bits was transmitted incorrectly and that an error occurred.

To start a task or open a window.