Check Digit Verification (Self-Checking Digit): A form of error detection mechanism that ensures the integrity of data during transmission or entry. It involves using a formula to calculate a check digit from the other digits in a string and then comparing that check digit to the one included with the string. If the calculated check digit matches the included one, the data is assumed to be correct; if not, an error is assumed, prompting a recheck or rejection of the data. This mechanism helps maintain data accuracy and can serve as a first line of defense against certain types of data corruption or fraudulent activity.
Categories: CC D3: Access Controls Concepts | CCSP D2: Cloud Data Security | CISM D3: Information Security Program | CISSP D2: Asset Security | Security+ D5: Security Program Management and Oversight | SSCP D3: Risk Identification Monitoring and Analysis
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