Muto: its servers were attacked with ransomware

1. 2021-08-31

   Servers were accessed without authorization in the morning and it was confirmed as ransomware. It announced the case the same day. [1]

2. 2021-10-29

   It published the investigation result. [2]

It detected unauthorized access from outside in the early morning, stopped the affected servers and cut the network. The investigation found that the access most likely came through the VPN device, and that ransomware had run on and encrypted several Windows servers. No leak of customer data, including personal data, has been confirmed. As countermeasures it upgraded the VPN, changed passwords and restricted VPN use. [2]