null character

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null character

n.
A data control character that fills computer time by adding nonsignificant zeros to a data sequence.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
By preceding the client login message with NULL characters an attacker can avoid MS-SQL's built in audit tools.