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INFORMATION SECURITY AND CONTROL

Learn how to deter, detect, minimize, investigate, and recover from security risks, including internal and external threats, disasters, and breakdowns. Understand risk assessment principles and administrative controls to ensure security policies are effective. Discover vulnerability management strategies and tools for disaster management, architectural controls, and encryption techniques.

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INFORMATION SECURITY AND CONTROL

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  1. INFORMATION SECURITY AND CONTROL

  2. SECURITY: • Deter • Detect • Minimize • Investigate • Recover

  3. Security Risks • Internal • External

  4. Threats • Disaster and breakdowns • Access and disclosure • Alteration or destruction • Improper use

  5. RISK ASSESSMENT • P1 Probability of attack • P2 Probability of success • L Cost of Loss Expected Loss = P1 * P2 * L Minimize Threat Categories

  6. Administrative Controls Standards, rules, procedures and discipline to assure that personnel abide by established policies. Includes segregation of functions.

  7. Security Policy Security is always a cost to efficiency. It must be promoted to be effective. • From the top • Before installing hardware • Politically charged

  8. Writing a Security Policy • Assess the types of risks • Identify vulnerabilities • Analyze user needs • Write the policy • Develop change procedures • Plan implementation • Implement

  9. Vulnerabilities • Servers Operating systems and applications • Networks Snooping, attacks, spoofing • Clients and modems PCAnywhere etc. • Viruses

  10. Operating Systems • UNIX • Novell Netware • Windows and Windows NT

  11. Administrative Controls • Security organization • Audits • Risk assessment • Administrative standards and procedures

  12. Disaster Management • Redundancy and fault tolerant systems • Backups and off site storage • Hot and cold sites • Planning and procedures

  13. Architectural Controls • Software controls Prevent unauthorized changes • Hardware controls Control access and use

  14. Tools • Firewalls • Network partitioning and routers • Encryption • Testing tools • Consultants

  15. Encryption • Keys and key length • Public key/private key • Processing problems • Location • Application • Network • Firewall • Link

  16. Authentication • Passwords • Biometrics • Isolation • Remote location verification

  17. SECURITY: • Deter • Detect • Minimize • Investigate • Recover

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