ISO 27001 vs SOC 2: Know these Certification Difference

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Have you ever wondered about the intricate world of data security certifications? With cyber threats becoming increasingly sophisticated, businesses are pressed to ensure their digital fortresses are impenetrable. Among the array of certifications, ISO 27001 and SOC 2 stand out as titans. But what sets them apart, and which one is the right fit for your organisation? Understanding the differences between ISO 27001 and SOC 2 is crucial for making an informed decision that could safeguard your company’s sensitive information.

This article will discuss the definitions, certification processes, compliance standards, key differences, and similarities between SOC 2 and ISO 27001 to help you decide which framework to use.


ISO 27001 vs. SOC 2

Some of the key differences between SOC 2 and ISO 27001 are:

Scope and Applicability: ISO 27001 is a comprehensive information security management system (ISMS) standard applicable to various industries and organisations, whereas SOC 2 specifically targets technology service providers, focusing on customer data protection.

Flexibility: ISO 27001 allows organisations to customise security controls for specific risks and needs. SOC 2 follows predefined criteria based on the Trust Services Criteria (TSC) principles.

Focus: ISO 27001 encompasses an organisation’s entire ISMS, covering all aspects of information security. SOC 2 focuses explicitly on customer data security and privacy, ensuring compliance with  Trust Services Criteria based on design (Type 1) and operation (Type 2).

Reporting: ISO 27001 certification results in issuing a certificate, while SOC 2 certification results in issuing a SOC 2 report, often requested by customers and stakeholders.

Market Recognition: ISO 27001 is globally recognised and accepted as a comprehensive standard for information security management. While gaining prominence, SOC 2 certifications are more commonly found in the United States.

Timeline for Compliance: Achieving ISO 27001 compliance typically ranges from 6 to 24 months, depending on the organisation’s size, complexity, and existing security practices. Becoming SOC 2 compliant generally takes 6 to 12 months, including developing and implementing controls and readiness for the audit.

Renewal Period:

ISO 27001 certification is typically valid for three years. However, annual second and third-year surveillance audits are required to ensure ongoing compliance. SOC 2 compliance needs to be renewed annually, with a fresh audit conducted each year to verify continued compliance with chosen Trust Services Criteria (TSC).


Similarities between ISO 27001 and SOC 2

While ISO 27001 and SOC 2 have some differences, they also share some similarities:

Security Focus: Both certifications focus on information security and require organisations to implement controls to protect sensitive information.

Independent Audits: Both certifications involve independent audits conducted by third-party auditors to assess compliance with the respective frameworks.

Continuous Improvement: Both certifications emphasise the importance of regularly monitoring, reviewing, and continually improving security controls and processes.

Customer Assurance: Both ISO 27001 and SOC 2 certifications provide assurance to customers and stakeholders regarding an organisation’s security and compliance posture.


Defining SOC 2 and ISO 27001

SOC 2 Certification

SOC 2 (Service Organisation Control 2) is a voluntary compliance framework developed by the American Institute of Certified Public Accountants (AICPA). It is specifically designed for technology service providers and focuses on customer data security, availability, processing integrity, confidentiality, and privacy. Customers often request SOC 2 audits to assess the security posture of service organisations. It specifies how organisations should manage customer data.

Key Elements:

  1. Trust Services Criteria (TSC): SOC 2 revolves around the TSC, which includes five core principles: security, availability, processing integrity, confidentiality, and privacy. Service organisations must align their controls with these principles.
  2. Control Implementation: To achieve SOC 2 compliance, service organisations must meticulously implement controls and processes that address each TSC principle. These controls are designed to ensure the security and privacy of customer data.
  3. Testing and Evaluation: SOC 2 involves rigorous testing and evaluation of the implemented controls. Independent auditors, often Certified Public Accountant (CPA) firms, assess the effectiveness of these controls in safeguarding customer data.
  4. Attestation Report: Following the audit, the CPA firm issues an attestation report detailing the organisation’s compliance with the TSC principles. This report is valuable for clients seeking assurance about the service organisation’s security practices.


ISO 27001 Certification

ISO 27001 certification is an international standard that sets out the criteria for establishing, implementing, maintaining, and continually improving an Information Security Management System (ISMS). It systematically manages sensitive company information, ensuring its confidentiality, integrity, and availability. The certification focuses on implementing a robust security management framework, risk assessment, and continuous improvement processes.

Key Elements:

  1. Security Management Framework: ISO 27001 mandates the establishment of a comprehensive security management framework within an organisation. This framework encompasses policies, procedures, and processes that govern how information security is managed across the organisation.
  2. Risk Assessment: A fundamental aspect of ISO 27001 is systematically identifying and assessing security risks to an organisation’s information assets. Through this risk assessment, organisations identify potential vulnerabilities and threats to their data.
  3. Security Controls: Based on the risk assessment results, ISO 27001 requires implementing a set of security controls. These controls encompass technical measures, policies, and procedures to mitigate identified risks.
  4. Continuous Improvement: ISO 27001 promotes a culture of continual improvement in information security. Organisations are expected to regularly monitor and review their security measures, adapting them to address evolving threats and vulnerabilities.

Also Read: MSP vs MSSP: What is the Difference?


Certification Process

ISO 27001

Achieving ISO 27001 certification entails a structured and formal process. The following steps are typically involved:

  1. Establishing an ISMS: The organisation must clearly define the scope of its ISMS and develop comprehensive policies and procedures to address security risks effectively.
  2. Risk Assessment: Identify and meticulously assess risks to information assets and implement appropriate controls to mitigate these risks.
  3. Implementation: Implement the necessary security controls and processes in alignment with the ISO 27001 standard.
  4. Internal ISO 27001 Audit: Regular internal audits ensure the ISMS is effectively implemented and maintained.
  5. Certification Audit: Engage an accredited third-party certification body to conduct an independent audit, verifying compliance with ISO 27001.



SOC 2 certification involves a similar process but focuses on evaluating the controls related to security, availability, processing integrity, confidentiality, and customer data privacy. The critical steps in the certification process include:

  1. Establishing Trust Principles: Identify the applicable trust principles and define controls to meet the criteria set for each direction.
  2. Control Implementation: Implement the controls and processes outlined for each trust principle.
  3. Testing and Evaluation: Rigorously test and evaluate the effectiveness of the implemented controls to ensure they operate as intended.
  4. Independent Audit: Engage an independent CPA (Certified Public Accountant) firm to perform an attestation engagement and issue a SOC 2 report.


Compliance and Security

Compliance Standards

ISO 27001: ISO 27001 compliance requires organisations to establish and maintain an effective ISMS that addresses the identified risks and ensures compliance with applicable legal, regulatory, and contractual requirements. It involves implementing a systematic approach to manage sensitive information, assess risks, and implement necessary controls to protect the confidentiality, integrity, and availability of data.

SOC 2: SOC 2 compliance revolves around meeting the criteria outlined in the Trust Service Criteria (TSC) developed by the AICPA. The TSC includes security, availability, processing integrity, confidentiality, and privacy and requires detailed controls and processes to ensure compliance. Organisations seeking SOC 2 compliance must demonstrate their adherence to these criteria through an audit performed by a CPA.


Security Compliance

ISO 27001 places a strong emphasis on information security management and risk assessment. It requires organisations to identify and assess these risks and subsequently implement controls that effectively mitigate them.

SOC 2 also assesses security controls but within the context of the five trust principles. It evaluates the design and effectiveness of security controls to protect customer data.

Also Read: In-House SOC VS. MSSP: Which is the right option for your business?



ISO 27001 Requirements

ISO 27001 requirements encompass establishing an ISMS, risk assessment, control implementation, internal audits, and compliance with the ISO 27001 standard. The standard offers flexibility in implementing controls, allowing organisations to adapt security measures to their specific risks and requirements.

  1. Establishing an ISMS: Define the scope, policies, and procedures for the ISMS. Implement an information security management system based on the ISO 27001 standard.
  2. Risk Assessment:  Identify and assess information security risks and establish a treatment plan.
  3. Controls Implementation: Implement controls to mitigate identified risks and meet the requirements of the ISO 27001 standard.
  4. Monitoring and Continual Improvement: Regularly monitor and review the ISMS, conduct internal audits, and continually improve the system.


SOC 2 Requirements

SOC 2 requirements are driven by the Trust Services Criteria (TSC) principles selected by the organisation. These principles include security, availability, processing integrity, confidentiality, and privacy. Organisations must implement controls aligned with the TSC principles and undergo independent audits to assess compliance.

Define Trust Principles: Identify the applicable trust principles relevant to the organisation’s services, such as security, availability, processing integrity, confidentiality, and privacy.

Control Implementation: Establish and implement controls that address the identified trust principles.

Testing and Evaluation: Conduct testing and evaluating the implemented controls to ensure their effectiveness and compliance with the trust principles.

Independent Audit: Engage an independent Certified Public Accountant (CPA) firm to perform an attestation engagement and issue a SOC 2 report.

Reporting: Prepare and distribute a SOC 2 report that provides detailed information about the controls implemented and their effectiveness in meeting the trust principles.


Which framework should you use? ISO 27001 or SOC 2?

The choice between ISO 27001 and SOC 2 should be guided by your organisation’s industry, customer expectations, and specific security and compliance needs. Organisations in technology or service-related sectors often lean toward SOC 2, while ISO 27001 offers adaptability and global recognition, making it suitable for various industries.

You should consult with professionals who specialise in information security and compliance and can provide valuable guidance in choosing the most appropriate framework for your organisation.



In conclusion, pursuing ISO 27001 or SOC 2 certification is a significant step in fortifying your organisation’s information security and compliance efforts. Understanding their nuances, differences, and commonalities is essential in making an informed choice that aligns with your organisation’s objectives and industry requirements.

Choosing SOC 2 or ISO 27001 also depends on factors such as your organisation’s nature, industry requirements, customer demands, and regulatory obligations. Both certifications ensure data security and trust in today’s digital landscape.

While considering the choice between SOC 2 and ISO 27001, consulting with experts in information security and compliance is recommended to assess your organisation’s specific needs and goals. They can provide guidance tailored to your industry and help you navigate the certification process effectively.

If you require assistance with information security and compliance, Binary IT is here to help. Our team of experts specialises in helping organisations achieve their security and compliance objectives. Contact us today to discuss your requirements and find the best path forward for your organisation.

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