Tribunal de Justiça do Estado, a court in the state of Rio Grande do Sul, was infected by REvil ransomware on Friday, forcing courts to shut down their network. Soon after the infection began, the court’s official Twitter account tweeted a warning to employees not to log into any of the court’s systems whether local or remote. The REvil operators are currently demanding a $5 million ransom to provide a decryptor and the criminals promise to refrain from posting the stolen data online if the ransom is paid.

@TJRSoficial warning court employees