C3RB3R attacks Synology NAS: how to protect your files | Kaspersky official blog
Source: Kaspersky Blog
At a glance
Many people think of a home network-attached storage (NAS) device as a large hard drive connected to their router. They store videos, photos, documents, and backups on it, then barely think about the device for years. That’s a huge mistake. In October 2026, attackers began infecting Synology NAS devices with C3RB3R ( Cerber ) ransomware. Many users report that they can no longer open files on their network storage, and that text files containing ransom demands are appearing in their folders. And this isn’t happening because someone accidentally downloaded a malicious file: anyone who forgot t…