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Data diddling is a type of cybercrime in which data is altered as it is entered into a computer system, most often by a data entry clerk or a computer virus.[1] Computerized processing of the altered data results in a fraudulent benefit. In some cases, the altered data is changed back after processing to conceal the activity.[2][3] The results can be huge. They might include adjusting financial figures up or down marginally, or it could be more complex and make an entire system unusable.[4]


  1. ^ "The 12 types of Cyber Crime". Digit. Retrieved October 1, 2018.
  2. ^ Parker, Donn B. (1989). Computer Crime: Criminal Justice Resource Manual (PDF) (2nd ed.). National Institute of Justice. pp. 12–13.
  3. ^ Hébert, Monique; Pilon, Marilyn (1991). Computer Crime. Law and Government Division, Library of Parliament.
  4. ^ Silverbug. "10 Types Of Cyber Crimes... And Another 10 You've Never Heard Of". Retrieved 2019-04-25.