Abstract: There is described a method, system and computer program product for processing a link embedded in a link document in a client computer, said link comprises a URL reference for a URL document in the client computer or another computer, there being stored a record containing a link reference and an intended fingerprint, said intended fingerprint representing the content of the URL document associated with the URL of the link at the time of or after the link was created, said method comprising the steps of: fetching the intended fingerprint for the link; fetching the URL document; creating a current fingerprint of the fetched URL document; comparing the intended fingerprint and the current fingerprint; and identifying that the intended fingerprint and the current fingerprint are different in a material way.

Abstract: A method for generating a set of one or more elements of a fingerprint for a document, the document comprising a semantic construct having one or more ordered words, the method comprising the steps of: defining a range of sizes for a fingerprint element; dividing the ordered words of the semantic construct into a set of one or more mutually exclusive fingerprint elements, wherein each of the one or more mutually exclusive fingerprint elements includes a number of adjacent words, the number being within the range of sizes for a fingerprint element; and responsive to a determination that the set of mutually exclusive fingerprint elements excludes a word from the semantic construct, discarding the excluded word.

Abstract: There is described a method, system and computer program product for processing a link embedded in a link document in a client computer, said link comprises a URL reference for a URL document in the client computer or another computer, there being stored a record containing a link reference and an intended fingerprint, said intended fingerprint representing the content of the URL document associated with the URL of the link at the time of or after the link was created, said method comprising the steps of: fetching the intended fingerprint for the link; fetching the URL document; creating a current fingerprint of the fetched URL document; comparing the intended fingerprint and the current fingerprint; and identifying that the intended fingerprint and the current fingerprint are different in a material way.