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Information Security Management Goes Global

Learn how to effectively manage information security risks, achieve business continuity, and comply with legislation through ISO/IEC 17799 best practices. Explore topics such as corporate governance, compliance, incident handling, and protecting online business.

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Information Security Management Goes Global

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  1. Business continuity Corporate governance Compliance with legislation Information assets Policy & procedures Management of risk Incident handling Best practice Protecting on-line business Managing 3rd party access Information Security Management Goes Global Ted Humphreys XiSEC

  2. Information Security Management Global Business Objectives Ensuring business continuity Minimise business damage Maximise return on investments These global objectives of information security management are also stated in ISO/IEC 17799

  3. Information Security Management Achieving the objectives by managing the risk

  4. Assessing the Risk • Risk is the potential that a threat will exploit a vulnerability and cause damage or loss to an asset • The assessment includes: • the value of the asset • the level of corresponding vulnerabilities • the likelihood of the relevant threats • existing and planned controls which protect the asset

  5. Managing the Risks • Expenditure on information security needs to be balanced against and appropriate to • The business value of the information and other business assets at risk, and • The business harm/impact likely to result from security failures

  6. Managing the Risk • Risk acceptance • Ignoring the risks • Risk avoidance • Risk transfer • Risk reduction

  7. Managing the Risks with Controls • Reduce the vulnerabilities • Reduce/eliminate the weaknesses • Reduce the likelihood of occurrence • Reduce/eliminate the cause • Minimise the probability by preventative measures • Reduce the consequences of impact • Ensuring effective monitoring • Taking steps to prevent, minimise or contain impact.

  8. Means of achieving targets Access control, user identification & authentication, encryption, digital signatures,message authentication, backups, capacity planning, regular maintenance, virus protection software, information handing procedures, physical security etc Information Security Management Targets Preserving theConfidentiality,Integrity/ authenticity &Availability of information

  9. Its about Information Security NOT IT Security What is ISO/IEC 17799? A risk based approach for defining policy & procedures & selection of appropriate controls to manage risk Its a standard on best practice for information security management

  10. Who looks after ISO/IEC 17799? 17799 is managed and maintain by ISO/IEC JTC 1/ SC 27 WG1 WG1 Convenor Ted Humphreys Editors Angelika Plate and Oliver Weissmann

  11. WG1 managing 1st revision due 200x ISO/IEC 17799: 2000 BS 7799 Part 1: 1999 BS 7799 Part 1: 1995 Some ISO/IEC 17799 History

  12. Security policy Security organisation Asset classification & control Physical & environmental security Communications & operations management Systems development & maintenance Personnel security Access control Business continuity Compliance What’s in ISO/IEC 17799? The Chapters Security policy Security organisation Asset classification & control Physical & environmental security Communications & operations management Systems development & maintenance Personnel security Access control Business continuity Compliance

  13. Control satisfies the requirements of the objective Advice and help on implementation of the control Other supporting help and information ISO/IEC 17799 Chapter Structure Control Objective Control Implementation Guidance Other Information

  14. Control Example External facilities management Control The risks of using external facilities management services should be identified in advance, and appropriate controls agreed with the contractor, and incorporated into the contract. Implementation Guidance Particular issues that should be addressed include: a)  Identifying sensitive or critical applications better retained in-house, b)   Obtaining the approval of business application owners, c)   Implications for business continuity plans, d)  Security standards to be specified, and the process for measuring compliance, e)  Allocation of specific responsibilities and procedures to effectively monitor all relevant security activities,responsibilities and procedures for reporting and handling security incidents Other Information The use of an external contractor to manage information processing facilities may introduce potential security exposures, such as the possibility of compromise, damage, or loss of data at the contractor’s site. See also 4.2.2 and 4.3 for guidance on third party contracts involving access to organizational facilities and outsourcing contracts

  15. ISO/IEC 17799 Policies & Procedures • Information security policy • Access control • Use of e-mail, Internet services & network connections • Use of mobile computing

  16. ISO/IEC 17799 Policies & Procedures • Security incident handling • Business continuity • Operational procedures • Change control • Housekeeping • Information handling • System acceptance

  17. ISO/IEC 17799 Organisational Security • To manage information security within the organisation • Security Forum • Allocation of roles and responsibilities • Co-ordination • Security of 3rd party access • Outsourcing, managed services etc • Security conditions in contracts

  18. ISO/IEC 17799 Asset Control • Accountability of assets • To maintain an asset inventory • Information classification • Information handling procedures • Maintain appropriate protection of assets • Asset ownership and security responsibilities • Delegation & accountability • Outsourcing, managed services etc

  19. ISO/IEC 17799 Operations Management • Procedures to ensure correct and secure operation • Minimise the risk of system failures • Safeguard the integrity of company information and software • Maintain the integrity and availability of company services

  20. ISO/IEC 17799 Operations Management • Ensure the protection of supporting system and networking infrastructures • Prevent damage to computer media • Incident management procedures • System and capacity planning and acceptance • Malicious software • Backups

  21. ISO/IEC 17799 – Security Incidents • Responding to incidents • To minimise the damage from security incidents, system malfunctions, software weaknesses, virus attacks, denial of service attacks, breaches of law, data theft etc • Monitoring, detecting, reporting, responding to and learning from security incidents

  22. ISO/IEC 17799 Controlling Access • To control access to the company’s information based on agreed access control policy and procedures • User access management • User registration • User responsibilities, rights and privileges, review

  23. ISO/IEC 17799 Controlling Access • Access policy, procedures and technical controls • Network services (internal and external), Web sites etc • Computer systems • Applications • On-site and off-site (remote) access • Monitoring system access and use

  24. ISO/IEC 17799 Systems Dev/Maintenance • Building security into the company’s systems and processes • Application systems • Input/output data validation • Internal processing validation • Cryptographic mechanisms • Non-cryptographic mechanisms

  25. ISO/IEC 17799 Systems Dev/Maintenance • Building security into the company’s systems and processes • System files • Control of software and protection of test data • Development and support environments • Change control procedures • Review of operating system changes • Restrictions on software changes

  26. ISO/IEC 17799 Business Continuity • To protect critical company processes and assets and to counteract interruptions to business activities from the effects of system failures, serious breaches of security, disasters etc

  27. ISO/IEC 17799 Business Continuity • A managed planning process should be in place • Procedures (for handling customers/suppliers, relocation, emergency control, fallback, resumption and recovery etc) should be developed and regularly tested • Plans and procedures should be regularly reviewed and updated as necessary

  28. ISO/IEC 17799 Compliance • Compliance with legislation and contractual requirements • To avoid breaches of any statutory, criminal or civil obligations and related security requirements

  29. In Summary - Why use ISO/IEC 17799? • Ensure business continuity • Minimise business damage & protect business assets • Maximise return on investments & business opportunities • Good corporate governance • “fit to manage risk”

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