Up to 40,000 UK Ticketmaster customers may have had “some personal or payment information” stolen following a data security breach at the ticketing giant.

Ticketmaster admitted it had been hacked by “malicious software” on third-party customer support product Inbenta Technologies.

Ticketmaster said the breach was likely to have only affected UK customers who purchased or attempted to purchase tickets between February and June 23, 2018.

“Some personal or payment information may have been accessed by an unknown third party”, Ticketmaster said in a statement.

All affected customers have been contacted, and the ticketing giant set up a website for those whose personal information may have been compromised in the incident. The website has been created in an effort to answer any questions and advise users to reset their passwords immediately.

Ticketmaster added: “If you have not received an email, we do not believe you have been affected by this security incident based on our investigations.

“Forensic teams and security experts are working around the clock to understand how the data was compromised. We are working with relevant authorities, as well as credit card companies and banks.”

Information and data that may have been compromised includes names, addresses, email addresses, telephone numbers, payment details and Ticketmaster log-in details.

The UK’s National Cyber Security Centre – a division of GCHQ – said it was monitoring the situation, the BBC reports

“The NCSC is working with our partners to better understand the incident,” added a spokesman.

Ticketmaster’s parent, Live Nation, declared it had 86 million customers in its most recent annual report.

However, a spokeswoman was unable to break out a figure for Ticketmaster’s total number of UK clients.

Ticketmaster has also offered affected customers in United Kingdom, Australia, New Zealand, Ireland, Germany, France and Spain a free 12-month identity monitoring service with a leading provider.

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