https://www.bleepingcomputer.com/news/security/helldown-ransomware-exploits-zyxel-vpn-flaw-to-breach-networks/

The new 'Helldown' ransomware operation is believed to target vulnerabilities in Zyxel firewalls to breach corporate networks, allowing them to steal data and encrypt devices.

French cybersecurity firm Sekoia is reporting this with medium confidence based on recent observations of Helldown attacks.