eBay has asked users to change their passwords following a cyberattack that compromised one of its databases.
The US firm said the database was hacked between late February and early March, and had contained encrypted passwords and other non-financial data.
The auction site added that it had no evidence of there being unauthorised activity on its members' accounts.
However, it said that changing the passwords was "best practice and will help enhance security for eBay users".
A post on eBay's corporate site said that cyber-attackers accessed the information after obtaining "a small number of employee log-in credentials", allowing them to access its systems - something it only became aware of a fortnight ago.