Klarna said a human error Thursday caused data of thousands of customers to be exposed to the wrong user, forcing the company to shut down the buy-now-pay-later site temporarily.
The Swedish company said a network update led to an error that affected app users. The "self-inflicted incident" lasted about a half hour and affected roughly 90,000 Klarna users, the company said.
"The bug led to random user data being exposed to the wrong user when accessing our user interfaces," Klarna CEO Sebastian Siemiatkowski said in a blog post.
Siemiatkowski said the data access was "entirely random" and did not involve "data containing card or bank details."