Plaintiffs claim the breach was "a direct result of [Ticketmaster's] failure to implement adequate and reasonable data protection procedures."

In April, the hacker group ShinyHunters accessed Ticketmaster’s database. It harvested the full names, addresses, emails, phone numbers and credit card information on up to 560 million customers. The Live Nation-owned company took nearly two months to discover the breach and four months to notify impacted users.

The suit alleges Ticketmaster and parent company Live Nation were negligent when it came to securing customer's personal data. Live Nation Facing Multi-Million Dollar Class Action Lawsuit Over Ticketm

A legal firm says it is investigating allegations of "deceptive, misleading or unconscionable conduct". The ticketing company says it is not responsible for setting prices.