Get Control of Cyber Risks With a Strong Third-Party Risk Management Program

A decade ago, many organizations began moving their workloads from traditional on-premises systems to cloud platforms. While this shift helped reduce costs and scale more efficiently, it also introduced an unexpected challenge: With more external partners connected to internal systems, new risks and exposures emerged.

Today, as more applications, data stores and business processes than ever run on third-party infrastructure, the aggregate exposure is growing, causing the governance burden to change shape. It is not just the provider’s risk; it is your business risk, redistributed.

The key change lies in understanding that when you work with vendors, both your organization and the vendor share responsibility for managing risks. You are not handing off all accountability to the vendor; instead, you both play an active role in ensuring security and protecting your business interests.

Providers deliver secure capabilities and audited controls, but they also hand back a defined set of obligations that your team must meet to use those services safely. Those obligations often show up in service auditor reports (like SOC 1/SOC 2) or as Complementary User Entity Controls (CUECs). If your organization uses a major Software as a Service (SaaS) platform, for example, you will receive its SOC reports — yet you still must implement the corresponding controls internally before you can rely on that system in a compliant and resilient way.

By the same token, uptime and data restoration commitments typically define how and when a provider will restore service after an incident; however, they rarely make your business whole if a critical platform or service is unavailable for an extended period of time (an HR platform or enterprise resource planning (ERP), for example). This means that the residual risk is yours to manage through architecture, operational playbooks and a mature third-party risk management (TPRM) program.

So, what steps can you take to develop a TPRM program that not only reduces these kinds of risks but also remains adaptable and easy to use when partnering with vendors?

Inside your organization’s own walls, you can instrument identity governance, enforce standard access reviews and trigger immediate deprovisioning. Outside of them, your levers are weaker. You may not know which individuals at a vendor touch your environment, how long they retain access, or what their internal controls look like day to day. Contracts are usually scoped to deliverables, not to named users and their permissions, which makes monitoring and remediation slower and less precise when something goes wrong.

It’s important be aware of the two of the highest-impact third-party access vectors:

1. Contractors and contingent labor. Internal employees typically pass through vetted HR processes and are governed by standard joiner–mover–leaver controls. External contractors often are not subject to the same processes. You may have limited visibility into how they are screened, what security practices their firms enforce, or who is performing the work.
   
   When the engagement ends, access is not always deprovisioned promptly, especially for identities granted administrative privileges to complete specialized tasks. Dormant, privileged accounts are prime targets for social engineering and credential-reset scams.
   
   
2. Machine identities and API integrations. As systems integrate more deeply with AI, automation and microservices, non‑human identities proliferate. API keys and service principals get embedded within pipelines and code repositories, often outside the line of sight of assessors. That invisibility makes them attractive targets because compromise at the machine layer can quietly open doors across environments.
   
   

When it comes to third-party breaches, two points of failure show up again and again.

The first is human oversight and credential misuse. Most incidents start with access, like a privileged account or a weakly protected password obtained through social engineering or brute force. Privilege escalation is a recurring pattern. Tokens and lower‑level accounts become stepping stones. Once an attacker lands inside an identity platform or adjacent system, they can move laterally, chaining privileges across applications until they reach data of interest. In some environments, that traversal can remain undetected for years.

The second failure point is a newer phenomenon: AI‑assisted impersonation. Attackers have begun using highly convincing synthetic audio and video to mimic senior leaders. This allows them to set up fraudulent meetings and deceive employees into giving access or sharing confidential information. The realism of these impersonations makes people less suspicious, increasing the likelihood of successful attacks.

These are real risks, not just theoretical ones, because they target the specific weaknesses that third-party connections commonly overlook:

• The true identity of external parties
• The extent of access granted to those identities
• The speed at which their privileges can be removed
  
  

Of course, there are also situations where the first exploit truly is a zero-day attack, and not all incidents can be avoided. What sets successful organizations apart is their resilience; those that continually strengthen their TPRM strategies can react more quickly, assess vendor risks effectively and adapt controls as new threats emerge.

An agile, resilient TPRM program is the missing link between business agility and risk accountability. The goal is not to slow down vendor onboarding but to ensure that velocity does not outpace visibility and control.

Operationalizing this balance involves following a few key steps:

1. Codify a TPRM policy and enforce it. If third‑party risk is not anchored in policy, it will be treated as optional. A clear TPRM or vendor‑risk policy sets expectations for who must do what (and when) across the lifecycle and signals executive commitment. Align ownership to the CIO, CISO or Chief Risk Officer (CRO), and ensure the operational muscle exists to back it up.
2. Tier vendors by business impact and inherent risk. Not all partners deserve the same scrutiny. Set assessment cadences that reflect materiality: review high‑risk vendors more frequently and in greater depth and apply lighter‑weight checks to low‑risk ones. Bake those intervals into your operating calendar and track them like SLAs.
3. Keep your risk library and threat model current. The attack surface shifts quickly. Be sure to incorporate emerging attack patterns (like AI‑enabled impersonation and machine‑identity exploitation) into playbooks and testing. Update control expectations and tabletop scenarios accordingly.
4. Close the contractor identity gap. Require named user lists for third‑party access with start/end dates and executive sponsorship while enforcing least privilege access for all external admin roles. Automate leaver workflows so that contractor access expires by default and then reconcile dormant accounts in privileged groups weekly.
5. Govern machine identities like you govern humans. Start with an inventory of API keys, service principals and tokens. Wrap non‑human credentials in vaulting and just‑in‑time patterns. Treat unaudited API‑to‑API integrations as high risk until they are catalogued and controlled.
6. Consume SOC reports and actually implement the CUECs. Request reports during onboarding and annually thereafter. Map CEUCs to internal owners, test them and document evidence. A report does not reduce risk if the obligations it assigns to you remain unfulfilled.
7. Demand contract terms that reflect operational reality. Push beyond generic SLAs and service credits. Align recovery objectives to your business impact analysis, require rapid, transparent incident notifications and ensure your organization can operate in a degraded mode when a critical external system is unavailable.
8. Assume compromise and limit traversal. Design identity and network boundaries so a single compromised account or token cannot provide access to your organization’s “crown jewels.” Apply step‑up authentication, session binding and conditional access for privileged operations. Segment high‑value applications from collaboration layers to slow common lateral‑movement pathways.
9. Test vendor changes before promotion. Make pre‑production testing of third‑party updates a non‑negotiable control for your most critical services and be sure to document outcomes and rollback plans. When vendors stumble in their own change management, your process should catch it.
10. Rehearse AI‑assisted social engineering scenarios. Update phishing programs and help desk protocols for deepfake‑quality impersonation. Train staff to verify sensitive requests through out‑of‑band channels, even when an “executive” appears on video.
    
    

Successful programs approach TPRM as an ongoing operational process rather than a temporary project, maintaining continuous procedures with defined enforcement and escalation protocols throughout the year. They use risk tiers to determine how often high‑value vendors are reassessed and how quickly findings must be remediated. They also evolve as the threat landscape changes, incorporating new attack techniques and control expectations into the next cycle rather than waiting for an annual refresh.

This maturity shows up in operational details, such as:

• Vendor owners who can articulate their CUECs and demonstrate they have been tested
• Identity teams that can produce a real‑time list of every contractor with admin rights
• Incident responders who can pivot quickly from, "Which vendor is this?" to "Which systems and data does their access touch?"

At a time when security budgets can become siphoned by a tool‑of‑the‑month cycle driven by fear, uncertainty and doubt, constant vendor noise can distract from the core job of managing business risk. Whether you’re building or modernizing your TPRM capabilities, you need a partner who helps you manage risk first and integrate tools second.

An expert partner will help your organization design and operate TPRM programs that align vendor controls with risk exposure — only recommending tools and technologies that support the overall strategy. With decades of experience managing enterprise risk, CDW TPRM experts have experience translating SOC reports into practical control assignments, standing up contractor identity governance that actually works, and helping teams pressure‑test policies against real-world attack patterns from API key compromise to AI‑assisted impersonation.