https://thenextweb.com/security/2019/11/12/mexican-state-oil-firm-pemex-hit-by-ransomware-attack/

Mexican state-owned oil firm Pemex has been hit by a ransomware attack that halted critical operations, prompting the company to disconnect its network from the internet and back up critical information from hard drives.

According to multiple reports from Reuters and Bloomberg, Pemex (short for “Petróleos Mexicanos”) servers were infected by Ryuk, a ransomware strain that’s typically distributed via email phishing campaigns.