TicketMaster.com

Ticketmaster, an American company specializing in the sale and distribution of tickets, is based in Beverly Hills, California, and works in many countries of the world. As a result of hacking in 2010, 680 million client records were compromised, but only 1 million of them are in the public domain. The leak included names, addresses, mail, IP addresses, the last 4 digits of credit cards, types of cards and other data.