Building a Robust ISMS Framework for a Leading Oil & Gas Company

Case Study: Building a Robust ISMS Framework for a Leading Oil & Gas Company

Background

A major Oil & Gas company engaged our Governance, Risk & Compliance (GRC) consulting services to strengthen its information security governance. With a geographically distributed workforce and operations spanning sensitive environments, the client required a structured Information Security Management System (ISMS) to support compliance, operational resilience, and ongoing security awareness.

The Challenge

The client had limited formal information security processes and required:

• A full ISMS framework, including key security policies, procedures, and operational processes
• Clear governance over user access, vulnerability management, third-party security, and remote access controls
• Awareness and cultural embedding of security practices among internal employees, IT users, and external partners
• Full compliance with internal standards and the capability to support future regulatory certification efforts

The Solution

We deployed a senior GRC consultant who worked collaboratively with the client’s IT leadership, service managers, and third-party vendors. Our phased approach included:

Phase 1: ISMS Framework Development

• Designed and built a tailored ISMS framework, aligning with best practice standards such as ISO/IEC 27001
• Developed a suite of security policies and operational procedures, including:
• Information Security Policy
• Information Disclosure and User Access Management Procedure
• Vulnerability and Patch Management Process
• Third-Party Security Management Procedure
• Remote Access Procedure
• Removable Storage Media Access Procedure

Phase 2: Policy Publication and Governance

• Established a secure central repository for hosting all approved information security documents
• Implemented a formal policy approval workflow to ensure control over updates and changes

Phase 3: Awareness and Training

• Delivered targeted workshops and training sessions for internal IT teams, service managers, service owners, and key business users
• Created easy-to-digest communications to socialize the ISMS framework across the organization

Phase 4: Operational Excellence

• Developed and rolled out an Exception Management Process to ensure that security exceptions are tracked, reviewed, and reduced over time
• Embedded security practices within the service delivery frameworks used by third-party vendors and managed services partners

Phase 5: Vendor Collaboration

• Worked closely with external service providers to align their operations with the ISMS requirements and contractual obligations, ensuring end-to-end security assurance

Results and Impact

Through our partnership, the client achieved significant results, including:

• A comprehensive ISMS framework, policies, and supporting processes established within six months
• Increased awareness and engagement across internal and external stakeholders through workshops, training, and structured communications
• Security policies were centralized, version-controlled, and formally governed, setting the foundation for future certifications if desired
• Key managed services partners aligned with the client’s new ISMS expectations, strengthening supply chain security
• Ongoing visibility and management of security exceptions enhanced risk oversight and remediation focus

Conclusion

Our expertise and guidance enabled the Oil & Gas company to develop a robust ISMS framework, enhance security awareness, and establish sustainable governance. Our partnership has had a lasting impact on the client’s ability to manage information security risks and protect its sensitive assets.