Sources say signs point to breach being an intel-gathering operation for Chinese government
                                
                                
                                    (Newser) -
                                    Up to 500 million customers may have had their personal info compromised in a  huge Marriott data breach , and investigators are now coming across clues as to who may be behind the hack. Sources tell  Reuters  that digital fingerprints—i.e., previously used "hacking tools, techniques, and procedures"—...