https://www.bleepingcomputer.com/news/security/qnap-warns-of-new-deadbolt-ransomware-encrypting-nas-devices/

QNAP is warning customers again to secure their Internet-exposed Network Attached Storage (NAS) devices to defend against ongoing and widespread attacks targeting their data with the new DeadBolt ransomware strain.

"DeadBolt has been widely targeting all NAS exposed to the Internet without any protection and encrypting users’ data for Bitcoin ransom," the company said in a statement issued today.