The SIG Questionnaire: What is it and how to respond to one

With a whopping 330 questions, the SIG Questionnaire ensures a thorough assessment of a vendor's security posture. These questions are structured around 18 individual risk controls, covering a wide range of security and risk aspects within a vendor's operations.

Jasper Cooper

October 30, 2023

What is the SIG Questionnaire?

"The Standardized Information Gathering (SIG) Questionnaire is a comprehensive IT Security Assessment"

At its core, the SIG Questionnaire is an in-depth security assessment questionnaire used by companies to evaluate and analyze the security and risk controls of their third-party vendors. Developed by Shared Assessments, it serves as a comprehensive tool for vendor assessments.

A Systematic Approach to Third-Party Risk Controls

Vendor assessments are crucial, but the process can be complex without the right tools. That's where the SIG questionnaire comes in. It provides a systematic way to scrutinize third-party risk controls and offers a customizable framework.

Delving into 18 Individual Risk Controls

With a whopping 330 questions, the SIG Questionnaire ensures a thorough assessment of a vendor's security posture. These questions are structured around 18 individual risk controls, covering a wide range of security and risk aspects within a vendor's operations.

Customization for Tailored Assessments

One of the key advantages of the SIG Questionnaire is its customization feature. While it offers a core set of questions, organizations can modify and adapt them to suit their specific assessment needs. This flexibility makes it suitable for both high-level overviews and in-depth evaluations.

By leveraging the SIG Questionnaire, companies can effectively evaluate the security measures of their third-party vendors while maintaining a standardized and efficient assessment process.

Why is there a need for shared assessments?

Imagine the scenario where hundreds of companies individually send their questionnaires to the same vendor. This would not only be cumbersome for the vendor but would also lead to inconsistencies in the data gathered. Shared assessments, like the SIG, provide a light yet comprehensive solution. They offer a standardized approach, ensuring that vendors are assessed using a consistent set of questions, simplifying the process for both parties involved.

The Purpose and Evolution of SIG

Originally designed to provide an assessment framework, the SIG has become more than just a questionnaire. Its purpose now extends to being an essential component in third-party risk management. Organizations no longer simply use it to gauge a vendor's security stance but also to determine the broader risks they might be inheriting through collaborations.

Furthermore, in the vast realm of vendor assessments, the SIG has positioned itself as both broad and light. It caters to a diverse range of organizations, from those needing a rapid assessment to those seeking an exhaustive evaluation.

How to Respond to a SIG Questionnaire

Responding to a SIG (Standardized Information Gathering) questionnaire requires careful consideration and attention to detail. Here are some steps to help you effectively respond:

  1. Understand the Purpose: Begin by thoroughly understanding the purpose of the SIG questionnaire. Read through the questions and identify the information being requested.

  2. Gather Information: Collect all the necessary information and documents needed to provide accurate and complete responses. This may include company profiles, product descriptions, case studies, certifications, and any other relevant materials.

  3. Assign Responsibility: Determine the team members or subject matter experts who can provide the required information. Assign specific responsibilities to each person, ensuring clear communication and deadlines are established.

  4. Review and Customize: Carefully review each question in the SIG questionnaire, ensuring that you understand the intent behind it. Tailor your responses to address the specific requirements of the questionnaire.

  5. Provide Comprehensive Answers: Provide detailed and comprehensive answers to the questionnaire. Whenever possible, include specific examples, metrics, and success stories to strengthen your responses and demonstrate your capabilities.

  6. Be Accurate and Honest: Ensure that all the information provided is accurate, up-to-date, and honest. Avoid exaggerations or misleading statements that may lead to credibility issues in the future.

  7. Proofread and Edit: Before submitting your responses, thoroughly proofread and edit the questionnaire. Check for any grammatical errors, inconsistencies, or missing information. A polished and error-free questionnaire reflects professionalism and attention to detail.

  8. Seek Feedback: Consider seeking feedback from colleagues or stakeholders before finalizing your responses. Their insights may help you improve the clarity and effectiveness of your answers.

  9. Submit on Time: Adhere to the deadline provided for submitting the SIG questionnaire. Late submissions may negatively impact your chances of being considered or may require seeking an extension, potentially reflecting poorly on your organization.

By following these steps, you can confidently respond to SIG questionnaires and showcase the value and expertise of your organization.

How does SIG Compare to CAIQ?

The Cloud Security Alliance's CAIQ (Consensus Assessments Initiative Questionnaire) is another popular tool in the vendor assessment arena. While the CAIQ is tailored for cloud service providers, the SIG offers a broader approach, suitable for a wider range of vendors.

That said, both tools aim to promote standardized information gathering. The choice between the two often boils down to the specific needs and preferences of the assessing organization.

While both SIG and CAIQ champion the cause of standardized information gathering, they serve slightly different niches. CAIQ is focused on cloud service providers, making it ideal for businesses deeply entrenched in cloud ecosystems. On the other hand, the SIG's broader framework is apt for a more extensive range of vendors.

However, there is a convergence in their objectives. Both tools underscore the importance of shared assessments and promote a collaborative approach towards vendor security.

The Advantages of SIG Over Other Assessment Tools

  • Standardized Information Gathering: As the name suggests, the SIG emphasizes standardized questions, ensuring that vendors are evaluated on a consistent scale.

  • Comprehensive Yet Customizable: The depth of questions, combined with the ability to customize them, ensures that organizations get the information they need without overwhelming their vendors.

  • Facilitates Third Party Risk Management: In an interconnected business world, third-party risk management is crucial. The SIG aids in this by offering a clear and consistent way to assess vendor risks.

  • Streamlines Vendor Assessments: With the SIG, vendor assessments become a streamlined process. Organizations can store and manage the data efficiently, allowing for more informed decision-making.


In a world where security breaches can tarnish reputations overnight, the SIG Questionnaire is a beacon of hope. It facilitates standardized, comprehensive, and customizable vendor assessments, ensuring that companies can confidently partner with third-party providers.

By adopting tools like the SIG, organizations not only fortify their own security postures but also contribute to a safer and more secure digital ecosystem. As we continue to evolve in a digital-first world, tools that promote standardized information gathering and security will be at the forefront, guiding us towards a safer future.

In the evolving landscape of digital security, tools like the SIG Questionnaire act as guardians, ensuring that the integration of third-party services doesn't compromise an organization's security. By emphasizing standardized information gathering, shared assessments, and customizable evaluations, the SIG empowers businesses to build more secure and resilient partnerships.

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