Penetration testing and remediation are critical components of a strong cybersecurity strategy. Organizations approach these services differently based on their size and operational needs. While SMBs often rely on a single trusted firm for both, larger enterprises tend to separate the roles to enhance oversight and specialization. Understanding these approaches can help businesses make informed decisions about effectively securing their systems.

A persistent question is which strategy is better. Organizations face a critical decision: should they hire the same vendor for penetration testing and remediation services or split these responsibilities between different providers? 

Reasons For Using A Single Vendor 

Many companies prefer to work with a single cybersecurity firm for both testing and remediation. This strategy is sound if the right partner is selected. 

Using one single vendor could mean: 

• Streamlined communications and contract negotiations
• Increased efficiencies due to deeper understanding of the customer’s environment
• Cost savings by bundling services 

The benefits of using a single vendor can seem obvious. When the team identifies and remediates vulnerabilities, the process can be more efficient and less prone to miscommunication. For highly specialized vulnerabilities requiring niche expertise, it might be necessary to use the same vendor for both identification and remediation. Also, many organizations benefit from establishing relationships with firms who understand their environment and can provide more targeted testing over time. That’s the good part. 

Potential Risks of Using A Single Vendor

The downside of using a single firm may not be as obvious. Using one firm could reveal risks through a conflict of interest. Testers need to be free from conflict of interest and can perform an impartial test against the environment. 

If a company stands to profit from both finding and fixing problems, it would have an inherent incentive to either find more problems than exist or recommend more expensive solutions than necessary. 

Two dangerous scenarios could play out:  

• The firm that conducted the pen test can overstate the severity or inflate the number of findings to generate more billable remediation work.
• Conversely, the firm could also underreport issues to reduce its workload or avoid exposing weaknesses in its previous implementations.  

Additionally, auditors and regulators will review the qualifications and relationships between the firms conducting pen testing and remediation services, and these organizations will need to show the separation of teams and services.   

So, what to do if you decide to go with one firm? After all, it’s not a bad strategy if you understand the risks.  

When selecting the same firm for pen testing and remediation services, it’s important to: 

• Ensure the findings from the penetration test are agreed upon with both parties before proceeding with any remediation efforts. Findings can sometimes miss important context about severity, level of risk, etc.
• Watch for attempts to expand remediation scope beyond what was identified in the original testing or to recommend solutions that seem disproportionate to the identified risks.
• If you're in a highly regulated environment, consider discussing the arrangement with your external auditors before proceeding. Get their input on what additional controls they would expect to see.
• Be wary if the vendor creates artificial urgency around remediation decisions or discourages you from seeking second opinions.
• Be suspicious if the vendor identifies an unusually high number of vulnerabilities compared to previous assessments or industry benchmarks, especially if most require their remediation services.
• Separate attestations from the testing and remediation teams are required to confirm they operated independently and weren't influenced by the other team's work. This documentation will be necessary for regulatory examinations or audits. 

Since remediation activities are often highly complex and typically handled by the client’s internal teams, Everforth Apex is uniquely positioned to provide the guidance and support to our customers with a hybrid approach. Everforth Apex provides certified and technical experts to review and validate findings from the penetration test, guide our clients, and assist with remediation efforts with a risk-based approach. 

Now that we’ve explored the pros and cons of working with one firm, let’s discuss splitting the work up.  

Reasons For Using Separate Vendors 

Larger enterprises or heavily regulated organizations often choose these activities (pen testing and remediation support). Separating these services ensures that: 

• Unbiased and independent validation of findings is provided
• Risk ratings and priority recommendations come from an independent perspective focused on the security posture, not potential revenue opportunities, as this article previously explained.
• Compliance documentation is more straightforward and more defensible when there's a clear separation between assessment and remediation activities.
• Using separate firms allows you to validate that remediation costs are competitive and reasonable through market comparison.
• Different vendors bring different methodologies, tools, and perspectives, potentially identifying issues or solutions that a single vendor might miss.
• You're not putting all your eggs in one basket. If one vendor has performance issues, availability problems, or goes out of business, you still have the other vendor.
• Building relationships with multiple security vendors provides you with different perspectives, broader industry intelligence, and more options for future security needs.
• While it requires managing two vendor relationships, each relationship is more straightforward with clearer boundaries and expectations. 

In addition, most cybersecurity frameworks and regulations (e.g. PCI-DSS, SOX, NIST, HIPAA, etc.) strongly prefer or require independence between penetration testing teams and remediation services, ensuring that independence and objectivity are well established. This different team can be within the same company, but “independence” is required, nonetheless. Well organized firms can maintain this strict separation between their testing and remediation teams, with different personnel, reporting structures, and financial incentives. 

On the other hand, splitting these services can result in a more complex process with contracted firms, time to negotiate, schedule of activities, scope, and knowledge transfer when connecting findings to remediation activities. While it seems that there are no “right” or “wrong” answers to this question, it comes down to preference. We see CISOs and other cybersecurity leaders choosing various routes, but a hybrid approach seems to be most common.  

CISOs Are Taking a Hybrid Approach 

Modern CISOs are increasingly adopting a hybrid approach like this: 

• Outsourcing penetration testing to one or more firms each year
• Handling remediation internally
• Leveraging a separate vendor to assist and augment internal team efforts
• Conducting follow-up validation  

The last part of the approach is an important one to highlight. Conducting follow-up validation is imperative for compliance requirements, such as PCI DSS, for example. Cybersecurity organizations must re-test and ensure the vulnerability has been resolved. At Everforth Apex, we work with our clients to review and validate critical findings in real-time, provide regular status updates, and clear escalation paths if testing uncovers active threats or ongoing compromises.  

Many regulations require that organizations not only identify vulnerabilities but also validate and verify their resolution. Some testing companies include limited retesting in their base price, while others charge separately. Ensure the preferred approach is documented in the contract. Also, consider an on-going relationship. Rather than ad-hoc pen testing engagements, many organizations benefit from establishing a relationship with testing and advisory companies that understand their environment and can provide more targeted testing over time. This model balances efficiency with objectivity, helping organizations stay secure and compliant. 

Final Thoughts 

Whether you choose a single vendor or split the responsibilities, the key is to ensure clear communication, defined scopes of work, and a strong focus on outcomes. A strong cybersecurity posture helps businesses protect data, stay compliant, and mitigate risks. Penetration testing identifies vulnerabilities, while remediation strengthens defenses to ensure long-term security. We perform application, server, network testing, and AI pen testing. Our services include:  

• Autonomous pen testing
• Human-Driven Assessments
• Attack Path Analysis
• Controls Validation
• Continuous Testing
• Adversary Emulation
• Social Engineering
• Physical Security Tests
• Red Team, Blue Team, Purple Team 

In addition, our cybersecurity advisors are skilled cybersecurity practitioners who can assist with advisory services following any pen test. Need help deciding the best approach for your organization? Contact us today for a free consultation.