Bloomberg US authorities have opened investigations into whether shares in Broadcom Inc. and CA Technologies Inc. were the target of a stock-manipulation scheme, according to people familiar with the matter. The inquires are related to Broadcom’s announcement that lawmakers were given what purported to be a US Defense Department assessment of national-security concerns surrounding Broadcom’s planned purchase of CA. That ...

Bloomberg Facebook Inc. said intimate information, including search results, recent locations and hometowns, were stolen from 14 million users by attackers in a major hack of the social network disclosed two weeks ago. The company said the cyber-attack, one of the worst to hit Facebook, affected 30 million people rather than about 50 million the company first reported September 28. ...

Bloomberg Microsoft Corp.’s Chief Executive Officer Satya Nadella called for national privacy legislation, days after Google became the latest tech giant to reveal a security flaw, potentially exposing personal data. “We hope that there’s more of a national privacy law,” Nadella said in an interview with Bloomberg News at the US Naval Academy in Annapolis, Maryland, where he discussed leadership ...