eBay makes users change their passwords after hack
The US firm said a database had been hacked between late February and early March, and had contained encrypted passwords and other non-financial data.
The company said 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 spokesman added that the firm's engineers were in the process of rolling out a feature that would oblige members to choose new passwords when they next logged in, which should be live in each of the countries eBay operated in by the end of the day.
The database... included eBay customers' name, encrypted password, email address, physical address, phone number and date of birth. However, the database did not contain financial information or other confidential personal information.
Although the firm also owns the PayPal money transfer service, it said that the division's data was stored separately, encrypted and that there was no evidence that it had been accessed.
It added that any members who used the same login details used on eBay for other sites should also update them.