Note there is a dedicated subforum for the PR series since that device is different than the single bay My Cloud that is generally discussed in this My Cloud subforum.
There is some discussion in another thread where a user apparently got hit with ransomwhere.
First thing to do is scan all devices on the network to ensure they are not infected since typically the ransomware is run by a local network computer and infects devices it finds on the local network. Next is to investigate the My Cloud/NAS device to see if it is accessible or facing the internet where it could be susceptible to hacking. If one has made backups of their NAS/My Cloud one can investigate if the backup is also infected. If not then restore from the backup.
