Login credentials for over 412 million users of adult websites run by California-based FriendFinder Networks Inc. were compromised last month in the largest hack of 2016, according to breach notification website LeakedSource.com. Compromised data includes nearly 340 million credentials for Adultfriendfinder.com, which bills itself as “the world’s largest sex and swinger community,” some 63 million records from video sex-chat site cams.com and about 7 million records from adult magazine site Penthouse.com, LeakedSource said in a blog published on Sunday. Asked if the account from LeakedSource was accurate, the company provided Reuters with a statement saying it had brought in outside...