From the first revelation that the Marriott’s computer systems had been breached, there was widespread suspicion that the hacking was part of a broad spy campaign to amass Americans’ personal data.CreditScott Olson/Getty Images

From the first revelation that the Marriott’s computer systems had been breached, there was widespread suspicion that the hacking was part of a broad spy campaign to amass Americans’ personal data.CreditCreditScott Olson/Getty Images
WASHINGTON — The cyberattack on the Marriott hotel chain that collected personal details of roughly 500 million guests was part of a Chinese intelligence-gathering effort that also hacked health insurers and the security clearance files of millions more Americans, according to two people briefed on the investigation.