In Wikipedia there is an article on Forensic linguistics that notes:
Forensic linguistics includes attempts to identify whether a person produced a given text by comparing the style of the text with the idiolect of the individual in question. The forensic linguist may conclude that the text is consistent with the individual, rule out the individual as the author, or deem the comparison inconclusive.
In 1995 Max Appedole relied in part on an analysis of Rafael Sebastián Guillén Vicente's writing style to identify him as Subcomandante Marcos, a leader of the Zapatista movement. Although the Mexican government regarded Subcomandante Marcos as a dangerous guerilla, Appedole convinced the government that Guillén was a pacifist. Appedole's analysis is considered an early success in the application of forensic linguistics to criminal profiling in law enforcement.
In 1998 Ted Kaczynski was identified as the "Unabomber" by means of forensic linguistics. The FBI and Attorney General Janet Reno pushed for the publication of an essay of Kaczynski's, which led to a tip-off from Kaczynski's brother, who recognized the writing style, his idiolect.
In 1978 four men were accused and convicted of murdering Carl Bridgewater. No forensic linguistics was involved in their case at the time. Today, forensic linguistics reflects that the idiolect used in the interview of one of the men was very similar to that man's reported statement. Since idiolects are unique to an individual, forensic linguistics reflects that it is very unlikely that one of these files was not created by using the other.
This appears to be very similar to the field of computational linguistics, in that at least in one case, it is being applied to questions of authorship. See here.
What is a general survey of Biblical scholars on the use of forensic linguistics in determining questions related to authorship of certain books in the commonly accepted New Testament canon? Are there examples of it being used to make a case for a "canon within a canon" by eliminating fraudulent letters (i.e. pseudepigrapha) existing in the commonly accepted canon?