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The protection of data against unauthorized access. Programs and data can be secured by issuing identification numbers and passwords to authorized users. However, systems programmers, or other technically competent individuals, will ultimately have access to these codes. In addition, the password only validates that a correct number has been entered, not that it the actual person. Using biometric techniques (fingerprints, eyes, voice, etc.) is a more secure method. Passwords can be checked by the operating system to prevent logging in. Database (DBMS) software prevents unauthorized access by assigning each user an individual view of the database. Data transmitted over networks can be secured by encryption to prevent eavesdropping.
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