The integrity of digital data is a prerequisite for its admissibility in court (Italian Law 48/2008). Integrity ensures that the information presented is complete and unaltered from the time of acquisition until its final disposition. Many of the operations commonly applied to digital content may compromise their integrity irreversibly.
For example, if you open a file and then re-save it, even if the file has not suffered any change, often such an action compromise its integrity. Rotating an image by applying Windows Preview implies the automatical saving of another version of the image different from its original version.
FORLAB carries out the integrity analysis by evaluating the consistency of all the information relating to the digital data and to its generation, as the metadata (i.e., the textual information contained in the file), the encoding properties of the digital object, the characteristics of the device that generated it.