Data diddling (also called false data entry) is

[t]he unauthorized changing of data before or during their input to a computer system. Examples are forging or counterfeiting documents and ex- changing valid computer tapes or cards with prepared replacements.[1]


"Examples of data diddling are forging, misrepresenting, to counterfeiting documents; exchanging valid computer tapes or disks with prepared replacements; keyboard entry falsifications; failure to enter data; and neutralizing or avoiding controls."[2]


  1. Computer Crime: Criminal Justice Resource Manual, Glossary of Technical Terms, at xiv.
  2. Id.

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