Falsification of Documents
The authenticity of documents (both electronic and hard copy) can sometimes be called into question in legal disputes.
Often this type of matter requires the business systems where the documents were created to be investigated for forensic artefacts that support (or otherwise) that the documents were created when they are claimed to have been. This can include understanding the history of the business systems over the period of time in question and forming an expert opinion about the likelihood of recovering forensic artefacts.
Other matters can be more closely focused on confirming the date of a document's creation or modification through analysis of the metadata of the electronic document.