1. A method for determining whether or not at least one digital image, obtained by a particular digital imaging sensor, has been tampered with, said method comprising the steps of: determining a reference pattern noise for said particular digital imaging sensor; identifying, with an automated processor, a correlation of portions of the at least one digital image which are not saturated black or white, with the corresponding portions of said reference pattern noise throughout said at least one digital image; matching portions of the at least one digital image for average luminance; and outputting, by the automated processor, an indication that the at least one digital image has been tampered with if a correlation of any respective portion of the at least one digital image with a corresponding portion of said reference pattern noise is inconsistent with correlations of other respective portions of the at least one digital image with corresponding portions of said reference pattern noise which has matched average luminance with the respective portion.