In an email and a notice posted to its website, Ticketmaster says the breach took place between April 2 and May 18.

The New York Times reported in late May that the breach claimed by the hacker group ShinyHunters affected more than 500 million Ticketmaster customers. ShinyHunters has taken credit for breaches at Microsoft and AT&T, among dozens of other companies, the Times reported, citing federal prosecutors.

The company said the breach affected customers’ basic information, including their name, date of birth, banking information and credit card numbers and expirations dates. The company did not disclose in the email or its notice how many customers were part of the breach.

“We take data protection very seriously and have been working with the relevant authorities, including law enforcement, as well as credit card companies and banks,” Ticketmaster stated in its online post.

The same day Ticketmaster was learning about the data breach, the U.S. Department of Justice and 30 state and district attorneys general filed an antitrust lawsuit against the company and its and parent, Live Nation Entertainment. The sweeping suit accused the companies of running an illegal monopoly over live events in America — squelching competition and driving up prices for fans.

Live Nation has long denied violating antitrust laws and on May 23 that the lawsuit “won’t solve the issues fans care about relating to ticket prices, service fees, and access to in-demand shows.”

A cyberattack in 2022 on the telecommunications giant exposed records from “nearly all” of its customers, the company said July 12. The breach did not compromise the content calls or texts, according to AT&T.

The data that was compromised included files containing records of calls and texts from more than 100 million wireless and landline customers from May 2022 through October 2022. Records from Jan. 2, 2023 also were breached for a small number of customers, the company said, though it wasn’t specific.