Concert ticketing service Ticketfly took its website offline Thursday morning after apparently becoming the latest victim of a hacker intrusion. The service announced the outage early Thursday morning on Twitter, declaring that it had been “the target of a cyber incident.”


“We’ve determined that Ticketfly.com has been the target of a cyber incident,” a Ticketfly spokesperson said in a statement. “Out of an abundance of caution, we have taken all Ticketfly systems temporarily offline as we continue to look into the issue. We realize the gravity of this decision, but the security of client and customer data is our top priority. We are working tirelessly, and in coordination with leading third party forensic experts, to get our clients back up and running.”


The site briefly featured a statement of the hacker group IsHaKdZ before the company took it offline, according to Hypebot. In the statement, the group threatened to publish an internal database.


It’s unclear at this point whether the hackers had any access to Ticketfly customer data. The company didn’t seem to respond to numerous tweeted questions from customers wondering about the fate of their tickets.


Ticketfly was acquired by Eventbrite for $200 million a year ago. The ticketing company previously belonged to music streaming service Pandora, which acquired it for $450 million in late 2015.