Ticketmaster confirms data hack - BBC

1. Ticketmaster confirms data hack  BBC
2. Live Nation investigating data breach of its US Ticketmaster unit  The Guardian
3. Hackers claim Ticketmaster/Live Nation data breach, more than 500m compromised  Cyber Daily
4. Ticketmaster hacked. Breach affects more than half a billion users.  Mashable
5. Live Nation confirms a massive Ticketmaster data breach  The Verge