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
Verifying the operating system and platform compatibility — NetBackup 9.0 | Cohesity Documentation
Verifying the operating system and platform compatibility
Verify that the NetBackup for Lotus Notes agent is supported on your operating system or platform.