After discovering a security breach last week, Linden Lab, the creator of the online game Second Life, has asked all 650,000 users of the game to change their passwords.

According to the BBC, the hack compromised personal data such as credit card details, passwords and home addresses. The credit card details were encrypted, said Linden Lab, and a second database holding unencrypted information was not affected.

Second Life is a virtual world where players can create a character, essentially allowing them to live out an entirely different existence on the internet. Its popularity has led to clothing brands and musicians attempting to reach Second Life's ever-increasing audience – recently Duran Duran staged a virtual concert there.

However, it now seems to be a target for hackers too. The nature of the data breach has meant Linden Lab cannot be entirely sure which users have had their personal details compromised, so it has asked all of them to change their passwords.

"While we realise this is an inconvenience for residents, we believe it's the safest course of action," Linden Lab said in a statement.