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
Appendix C. Script-based Block-Level Incremental (BLI) Backups without RMAN on UNIX and Linux systems — NetBackup 11.1 | Cohesity Documentation
Script-based Block-Level Incremental (BLI) Backups without RMAN on UNIX and Linux systems