Ticketmaster customers in North America have been sent emails warning them to take action after the company was hacked in May.
Emails were sent overnight to Canadian customers, urging them to “be vigilant and take steps to protect against identity theft and fraud.”
The company has not commented on the notification process – however similar emails have reportedly been sent to victims in the US and Mexico.
The personal details of 560 million Ticketmaster customers worldwide were stolen in the hack – with cyber criminals then attempting to sell that information online.