Sony said it has launched an investigation after a ransomware group claimed it had compromised its systems. According to CyberSecurityConnect, a ransomware group calling itself Ransomed.vc claimed to have compromised Sony Group and threatened to sell the stolen data.

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Ransomed.vc made a high-profile claim on both the clearnet and the darknet: "We have successfully hacked [sic] all of Sony's systems. We will not ask them for ransom! Since Sony does not want to pay, we will sell the data."

The hacking evidence data released by Ransomed.vc includes screenshots of internal login pages, an internal PowerPoint presentation outlining the details of the test bed, and some Java files. Additionally, there is the entire leak's file tree, which appears to number less than 6,000 files. Compared with the statement of "all Sony systems", security researchers believe that the impact of this data is "very small".

Ransomed.vc has threatened to release the data on September 28 if no buyer is found before then.

"We are currently investigating the situation and we have no further comment at this time," Sony said in a statement.

The news is reminiscent of the costly PlayStation hack in 2011, when personal information of 77 million accounts was accessed. PSN ended up going offline for nearly a month, disrupting game releases and nearly all customer service.

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Ransomware group claims to have hacked 'all of Sony's networks' and is selling data