Japanese forex trading platform GMO Internet Group has been hit by a cyberattack, with the perpetrators threatening to leak customer data unless a $50 million ransom is paid. GMO Internet Group has stated it will not comply with the hackers' demands. The company has urged customers to scan their PCs for viruses, back up files, disconnect from the network, shut down devices, and unplug cables before the hackers' Tuesday noon deadline. Previously, some customers had reported unauthorized transactions in their accounts.