Ticketmaster breach, claimed on hacker forums — confirmed in an SEC filing
@vxunderground posted on May 30, 2024 about the alleged breach. Live Nation confirmed it in a filing on May 31.
Leaked on 30 May 2024

On May 30, 2024, @vxunderground posted that it had spoken with people involved in the alleged Ticketmaster breach and said attackers reached Ticketmaster cloud instances by pivoting from a managed service provider.
BleepingComputer reported that day that ShinyHunters was selling what it claimed was data on 560 million Ticketmaster customers for $500,000. On May 31, Live Nation said in an SEC filing that it identified unauthorized activity in a third-party cloud database on May 20, 2024.
Confirmed that a breach occurred. The access path in the post comes from unnamed people and is not confirmed by the filing as quoted. (source: BleepingComputer)