Security Concerns for a Bank - Classification:

• Robbery/Bank Vault theft - Physical security
• ATM skimming/physical tampering - Physical security
• Insider fraud/employee collusion - Human security
• Phishing/social engineering - Human security
• Operating system vulnerability exploitation (unpatched OS) - Operating-system security
• Privilege escalation on DB server - Operating-system / Database security
• SQL injection on online banking - Database security
• Unauthorized access to customer accounts/tables - Database security
• Data leakage via SELECT bypass - Database security
• Network eavesdropping - Operating-system / Database (communication)
• Backup tape theft - Physical + Database security
• Ransomware encrypting DB files - Operating-system and Database

Classification per item shows multi-layer defense needed. Physical guards/CCTV, human training/background checks, OS hardening/patching, DB GRANT, VPD, encryption, audit logs.