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INFORMATION SECURITY AND CONTROL

INFORMATION SECURITY AND CONTROL. SECURITY:. Deter Detect Minimize Investigate Recover. Security Risks. Internal External. Threats. Disaster and breakdowns Access and disclosure Alteration or destruction Improper use. RISK ASSESSMENT. P1 Probability of attack

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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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