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Information Systems Security

Information Systems Security. Operations Security Domain #9. Operations Security Objectives. Operations Responsibility & Personnel Configuration Management Media Access Protection System Recovery Facsimile Security Vulnerability and Penetration Testing Attack Types.

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Information Systems Security

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  1. Information Systems Security Operations Security Domain #9

  2. Operations Security Objectives • Operations Responsibility & Personnel • Configuration Management • Media Access Protection • System Recovery • Facsimile Security • Vulnerability and Penetration Testing • Attack Types

  3. Computer Operations • Fixing Hardware and software issues • Media Libraries • Controlling Remote Access • Contingency Planning • Incident Handling • Licensing Issues • Input Controls • Backup and Recovery

  4. Threats to Operations • Disclosure • Destruction • Loss of system and network capabilities • Corruption and Modification • Theft • Espionage • Hackers/Crackers • Malicious Code

  5. Issues • Backup Maintenance • Change workstation/location • Used to improve security • Need to Know Required • Least Privilege Principle Enforced • Due Care • Due Diligence • U.S. Federal Sentencing Guidelines of 1991 • Up to 290M for non-performance

  6. Security Control Types • Directive control • Used to guide the security implementation • Preventive control • Can deter or mitigate undesirable actions • Detective control • Verifies whether a control has been successful • Corrective control • Used to reverse the effects of an unwanted activity

  7. Examples • Directive – policies, standards, laws • Preventive – firewalls, authentication, access controls, antivirus software • Detective – audit trails, logs, CCTV, CRC • Corrective – incident handling, fire extingiuishers

  8. Vulnerability Testing • Things to agree upon • Goals of the assessment • Written agreement from management • Explaining testing ramifications • Understand results are just a ‘snapshot’

  9. Steps in Testing • Reconnaissance • Obtain info either passively or actively • Sniffing, eavesdropping, ARIN, Whois, etc. • Scanning • ID systems that are running and active services • Ping sweeps and port scans • Gaining Access • Exploiting vulnerabilities to gain access • Buffer overflow, brute force

  10. More Steps • Maintaining Access • Uploading software to ensure reentry • Trojan Horse, backdoor • Covering Tracks • Hide one’s malicious activities • Delete system and application logs

  11. Honeypots • Usually placed in DMZ • Should not be connected to internal network • Sacrificial lamb system • Goal is that hackers will attack this system instead of production system • Leaves many ports open and services running to be more ‘enticing’

  12. Sensitive Media Handling • Marking • Handling • Storing • Destruction • Declassification

  13. Continuity of Operations • Fault Tolerance • Software • Hardware • Data Protection • RAID 0, 1, 5, 10 • Redundant Communications • Phone, Broadband, Wireless, Satellite • Redundant Power Supplies

  14. Auditing • Auditing Basics • Logs, monitors, and triggers • Accountability, Compliance • Audit trails • Sampling and clipping levels • External auditors

  15. Monitoring Tools • Warning banners • Keystroke monitoring • Traffic analysis • CCTV

  16. More Terms • Ethical Hacking • War dialing • Radiation monitoring • Dumpster diving • Social engineering

  17. Physical Security • Facility Location and construction • Electrical Issues • Perimeter Protection • Physical Intrusion Detection • Fire Prevention

  18. Threats • Physical Damage • Theft of Assets • Interruption of Service • Disclosure of Proprietary Information • Natural Disaster • Vandalism • Terrorism

  19. Administration Controls • Facility construction • Site management • Personnel controls • Emergency procedures • Awareness training

  20. Technical Controls • Access controls • Alarms • CCTV/Monitors • HVAC • Power Supplies • Fire detection and suppression

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