Sony might have been hacked again.

"Security hacker group" Ourmine has taken control of Sony's official PlayStation Twitter and Facebook, and is claiming to have access to the PlayStation Network Database.

"PlayStation Network Databases leaked #OurMine," the official PlayStation account tweeted this morning.

"Hi, it's OurMine, we are a security group, if you works at Playstation then please contact us."

These tweets have since been deleted. PlayStation's Facebook account posted similar messages.

OurMine has previously hacked into celebrity accounts, including Niantic's John Hanke, Facebook's Mark Zuckerberg, and the official Twitter accounts of Game of Thrones, among others.

The group claims to be a "white hat" organisation – that is, they claim they are merely pointing out flaws rather than stealing data.

Using the PlayStation Brasil Twitter account, the group said it wasn't going to share the data it allegedly has access to.

Even so, now might be a good time to change your password and remove you credit card from your account, just in case.

In 2011, PlayStation Network was breached, and the personal details of approximately 77 million accounts were compromised. It was one of the largest data security breaches in history, and a subsequent network outage while Sony shored up its security lasted 23 days.