Ransomware attackers specifically target and attempt to destroy backup systems to increase the probability of payment. Hardening your system is critical. Please ensure you have reviewed your platform security using the Security Hardening Checklist
Information on NetBackup Vault — NetBackup 10.3 | Cohesity Documentation
Information on NetBackup Vault
Information on tuning NetBackup Vault is available.
Refer to the "Best Practices" chapter of the NetBackup Vault Administrator's Guide.