Names, emails and addresses were taken.
Smartphone manufacturers OnePlus have warned customers that their personal information may have been accessed by hackers.
The Chinese company said that the order information of some customers was accessed by an "unauthorised party".
The information accessed in the breach includes names, contact numbers, email and shipping address but the company said payment information, passwords and accounts were not affected.
OnePlus said that affected customers may receive spam and phishing emails as a result of the breach.
While it did not go into any more detail on the breach, OnePlus said that is has “inspected our website thoroughly to ensure that there are no similar security flaws," which suggests the breach came from the OnePlus website or store rather than through one of their devices.
Users of OnePlus devices received notifications of the security issue on Friday and it's not yet known how many Irish customers are affected it.
In a statement the company said: "We took immediate steps to stop the intruder and reinforce security. Before making this public, we informed our impacted users by email. Right now, we are working with the relevant authorities to further investigate this incident."
This is not the first breach the company has suffered, in January 2018, the company said up to 40,000 customers had been affected by a security breach that caused customers’ credit card information to be stolen.
