FRAMINGHAM, Mass.--(BUSINESS WIRE)--Staples, Inc. (Nasdaq: SPLS) today gave an update on the investigation into its previously announced data security incident involving a small percentage of its retail point-of-sale systems. Staples’ data security experts detected that criminals deployed malware to some point-of-sale systems at 115 of its more than 1,400 U.S. retail stores. Upon detection, Staples immediately took action to eradicate the malware in mid-September and to further enhance its secu