A leading Japanese matchmaking app was hacked, likely exposing the personal information of more than 1.7 million account holders, in the latest high-profile online attack. Net Marketing Co, which runs the Omiai dating app, said that it found evidence of unauthorized access to its servers last month. Among the data exposed were photographs of ID used to confirm the age of users, including drivers’ licenses, insurance cards and passports. Credit card data were not leaked in the hack, the firm said on Friday, adding that it had yet to confirm misappropriation of the personal information. The Omiai app, named after the Japanese