Problem
Production asset folders are shared broadly, allowing malicious files to spread across team workstations.
Solution
Root Cause / Diagnostic:
Permissive SMB/NFS file share permissions across production networks allow lateral malware propagation if a single editor's workstation is compromised. When asset folders possess universal read/write permissions for all domain users, a single infostealer or ransomware dropper can traverse local network shares to infect peer workstations and staging servers. The lack of role-based network storage segmentation turns an isolated endpoint incident into a studio-wide operational catastrophe.
Actionable Fix:
1. Implement granular Least Privilege Access Control Lists (ACLs) on production NAS shares, granting editors read-only access to master libraries and restricting write permissions strictly to designated active project folders.
2. Disable SMBv1 and unauthenticated guest access across all internal storage arrays, enforcing SMB Signing and Kerberos-based Active Directory / LDAP authentication.
3. Audit network share ACLs using PowerShell `Get-SmbShareAccess -Name "ProductionAssets"` to verify that "Everyone" or "Domain Users" do not retain unrestricted Full Control permissions.
Pro Tip:
Enforce file screening rules on production NAS shares to automatically block, reject, and alert on executable file extensions (`.exe`, `.dll`, `.com`, `.ps1`) attempting to write to asset folders.
Permissive SMB/NFS file share permissions across production networks allow lateral malware propagation if a single editor's workstation is compromised. When asset folders possess universal read/write permissions for all domain users, a single infostealer or ransomware dropper can traverse local network shares to infect peer workstations and staging servers. The lack of role-based network storage segmentation turns an isolated endpoint incident into a studio-wide operational catastrophe.
Actionable Fix:
1. Implement granular Least Privilege Access Control Lists (ACLs) on production NAS shares, granting editors read-only access to master libraries and restricting write permissions strictly to designated active project folders.
2. Disable SMBv1 and unauthenticated guest access across all internal storage arrays, enforcing SMB Signing and Kerberos-based Active Directory / LDAP authentication.
3. Audit network share ACLs using PowerShell `Get-SmbShareAccess -Name "ProductionAssets"` to verify that "Everyone" or "Domain Users" do not retain unrestricted Full Control permissions.
Pro Tip:
Enforce file screening rules on production NAS shares to automatically block, reject, and alert on executable file extensions (`.exe`, `.dll`, `.com`, `.ps1`) attempting to write to asset folders.