NAS Security Center
Ransomware keeps hitting NAS devices the same way: an internet-exposed admin interface plus an unpatched flaw —
Qlocker and DeadBolt (QNAP, 2021–22), DeadBolt on Asustor and TerraMaster (2022), and now
C3RB3R on Synology (October 2026). Everything below is built from vendor advisories, CERT
warnings and incident-response reports — what happened, exactly how to fix your box, and what to do if it's too late.
Active incidents
Hit already? Recovery first
Files locked? Recovery walkthrough Your NAS files are encrypted and renamed .L0CK3D or .deadbolt. What actually works: snapshots, Encryption Key … Step-by-step — act before you reboot → The 12-step hardening checklist The 12 steps that would have stopped every major NAS ransomware campaign (Qlocker, DeadBolt, C3RB3R): update d… 10 minutes, any vendor → 3-2-1 backup that survives ransomware 3-2-1 backup explained for NAS owners: 3 copies, 2 media, 1 off-site — extended to 3-2-1-1-0. Concrete setups … The one thing that survives → The 12-step hardening checklist Three-way self-triage for NAS owners: check by symptom (file extensions, ransom notes), check by vendor and fi… 60-second triage → The 12-step hardening checklist Every legitimate decryption path for NAS ransomware: No More Ransom/Emsisoft tools, the eCh0raix 2019 decrypto… Honest inventory — no snake oil → The 12-step hardening checklist The six ways NAS devices actually get compromised: exposed admin interfaces, unpatched 1-day flaws, weak/defau… Six doors, six locks → Backup & recovery software
The defense and the undo both live in software: our tool encyclopedia covers every backup tool worth buying (Veeam, Acronis, Duplicati, Hyper Backup, HBS 3), every data-recovery tool worth trying (Recuva, EaseUS, R-Studio, Disk Drill, DMDE), and the ransomware risk of Windows Storage Spaces / TrueNAS / Unraid / OMV builds — one page each.
Vulnerability breakdowns
The pattern: ransomware history
Your vendor's security page