Vendor Risk Assessment — A Practical Guide

The Vendor Risk Assessment — A Step-by-Step Guide to Evaluating Third-Party Risk

What Is a Vendor Risk Assessment?

A vendor risk assessment reviews the vendor to determine how well equipped it is to provide the needed assurance of maintaining information security throughout the data life cycle and/or contractual period . It should identify any potential threats and vulnerabilities that the vendor might encounter and evaluate how well equipped the vendor is to proactively identify and mitigate risk if it materializes .

The Assessment Process

Step 1: Assemble Internal Stakeholders

Gather a cross-functional team representing multiple roles with different priorities :

• IT Security
• Compliance
• Procurement
• Legal
• Business owners

Step 2: Define Acceptable Risk Levels

Before assessing potential vendors, define the organization's risk appetite . This makes the vendor selection process more efficient, identifying vendors that won't meet the required risk tolerance .

Step 3: Categorize Vendors by Risk

Classify partners into risk levels—critical, moderate, and low—based on service dependency :

• Critical: Access to sensitive data, business-critical services
• Moderate: Limited access, moderate impact
• Low: Minimal access, low impact

Step 4: Send Risk Assessment Questionnaires

Different types of questionnaires can be sent:

• Industry-standard questionnaires (SIG, CAIQ, VSAQ) 
• Customized questionnaires based on organizational needs 
• Use frameworks such as NIST Cybersecurity Framework when designing questionnaires 

Questionnaire focus areas:

• What security controls do you have in place? 
• How do you store or process sensitive data? 
• What is your authentication policy? Is MFA mandatory? 
• How often do you conduct backups? 
• Do you have an incident response plan? 
• What is your privacy policy? 

Step 5: Evaluate Assessment Results

• Review vendor responses
• Validate claims with evidence
• Identify gaps and risks
• Document findings

Step 6: Categorize and Remediate Risks

Risks identified must be categorized as either acceptable or unacceptable . For unacceptable risks, organizations work with vendors on remediation or terminate the relationship .

The FAIR Evaluation Criteria

Organizations should consider 4 objectives to be non-negotiable when outsourcing deliverables to a vendor :

1. Restricting Sensitive Data Access: Assessing the effectiveness of the vendor's security measures against unauthorized access, loss, or theft 
2. Ensuring Regulatory Compliance: Vendor risk assessments help ensure that third-party vendors comply with regulations, reducing the risk of legal penalties 
3. Mitigating Supply Chain Risk: A security breach of a vendor can create a domino effect, compromising the entire supply chain 
4. Maintaining Effective Communication: Establishing and maintaining effective communication with vendors on an ongoing basis is critical 

Due Diligence Questions

Before engaging a vendor, organizations should consider :

• Have the vendor's security policies, procedures, and practices been vetted and approved by organizational security leaders?
• Does the vendor follow any industry-recognized best practices or have security certifications?
• Have audit and assessment reports been reviewed and on-site assessments conducted, if required?
• Has guidance been sought where required to assess the vendor's security practices?

Conclusion

Vendor risk assessments are essential for evaluating how well vendors handle secure information throughout the data life cycle . Effective assessments enhance transparency, accountability, and security controls in an evolving cyberrisk environment .

Action Items for Your Organization

• Define vendor risk assessment process
• Create assessment questionnaires
• Establish vendor tiering
• Conduct initial assessments for critical vendors
• Document findings and remediation plans