Alex Neill, Which? Managing Director of Home Products and Services, said:
“Many thousands of customers will be seriously concerned about this latest data breach.
“Those who believe they may be affected should keep a very sharp eye on any accounts linked to their Ticketmaster logins, and be wary of suspicious emails or messages from fraudsters. Ticketmaster users whose data might have been compromised should change their password, and if they use that password on any other website, change it there too.”