Marriott Cyberattack Linked to Chinese Intelligence-Gathering Effort

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. The hackers, they said, are suspected of working on behalf of the Ministry of State Security, the country’s Communist-controlled civilian spy agency.