A few years ago, I moved out of an apartment and realized I had no idea how many copies of my key were floating around. I gave one to my girlfriend, one to the maintenance team, and one to a friend who had visited from out of town (who had likely smuggled it five states over by then). I was stressed. Not because of a jagged piece of metal, but because the security of that apartment rested on every person I'd ever trusted with a way in, and I'd long since lost track of who that was.
Businesses have the exact same problem, except the keys are digital and there are hundreds or even thousands of them. Every vendor, contractor, and outside tool you connect to holds some level of access to your systems or your data. Keeping track of who has a key—and whether they can be trusted with it—is the entire job of third-party risk management (TPRM).Â
Table of contents:
What is third-party risk management (TPRM)?
Third-party risk management is the process of identifying, assessing, monitoring, and mitigating the risks that come from working with external parties.
You may work in tandem with vendors, suppliers, contractors, software, and service providers—all having access to some level of information on or access to your business and data. The grand idea of TPRM is to give you a clear view of who those third parties are, what they can access, and what safeguards they actually have in place, so an outside partner's problem doesn't become yours.
Done well, TPRM runs continuously, spanning the entire relationship from the moment you're considering a vendor to the day you shut off their access for good.
Why is third-party risk management important?
You can have the best security systems in the world, but your safeguards don't extend to the third parties you work with. Those businesses have their own servers, guarded by their own teams, on budgets you never got to scrutinize or approve.Â
Here's what's at stake:Â
Regulatory compliance. Regulators increasingly want proof that you're managing vendor risk, not just a confident nod that you've got it handled. For example, since the SEC's cybersecurity rules took effect in December 2023, US public companies have had to disclose material cybersecurity incidents within four business days of determining them material. Public companies also have to describe how they manage cybersecurity risks, including those from third-party providers, in their annual 10-K filings.
Business continuity. When a vendor has a data breach, so do you. The fun part is that the damage rarely stays with the third party that caused it, rippling straight through to your data, your customers, and your reputation, no matter how loudly you insist it technically wasn't your fault. A single compromised or failing provider can stall a product launch, freeze operations, expose user data, tarnish your customer experience, and cause a PR nightmare.
Vendor relationships. Knowing exactly what each vendor does, what they can access, and how critical they are lets you focus energy into the relationships that earn it and stop over-investing in the ones that don't. Clear expectations on both sides tend to make vendors easier to work with—and the ones that make it harder typically aren't worth your time.
Cybersecurity. 30% of data breaches in 2025 involved a third party, according to Verizon's Data Breach Investigations Report. Third parties are often easier targets than the companies they serve, which makes them the path of least resistance.
The 5 key types of third-party risks
Different vendors put you at risk in different ways: your cloud storage app is mostly a cybersecurity issue, while the freelance designer with a login to your brand accounts is more of a compliance and reputation one. Sorting the risk into categories helps you assess each vendor, so you don't end up grilling your coffee supplier on firewalls when they're just trying to send you a sack of beans.Â
Most TPRM frameworks sort third-party risk into five buckets, and most vendors will happily sit in several at once:
Cybersecurity risk. The chance that a vendor's weak security turns into your unlocked back door—by way of a breach, stolen credentials, malware, or a vulnerability they never got around to patching. This is the category behind most of the breach headlines, and the one that spreads fastest once something goes sideways.
Compliance and regulatory risk. How likely a third party's behavior lands you on the wrong side of a law or standard, even when you had nothing to do with it. If a vendor fumbles personal data covered by GDPR or HIPAA, the fines and legal headaches have a way of finding their way back to you.
Operational risk. The risk that a vendor's failure knocks out your ability to actually run the business: an outage, a crucial out-of-stock item, a missed shipment, or a service that grinds to a crawl at the worst possible moment. The more critical the vendor, the more it stings when they stumble.
Reputational risk. The chance that a third party's bad behavior or very public meltdown on social media damages your brand by association. Customers don't see the difference between "our issue" and "our vendor's issue"—to them, it's all the same.
Financial risk. Plain monetary loss: breach cleanup costs, regulatory fines, revenue lost while you're down, or a financially shaky vendor going under and taking your prepaid services with it. Every other risk on this list eventually shows up here in dollars anyway.
The third-party risk management lifecycle
TPRM works best when you treat it as a loop rather than a checklist—a set of connected stages a vendor moves through from first contact to final offboarding. Here's what each stage does and why skipping any one of them undermines the rest.
1. Sourcing and due diligence
This is where you identify a potential vendor and dig into their risk profile before you commit. You catalog what the vendor will do, what data and systems they'll touch, and how critical they are to your operations, then evaluate their controls. This is typically done through security questionnaires, requests for documentation like SOC 2 reports, and reviews of their compliance posture.
It'll save you time to use common sense here. The vendor holding your entire customer database earns a thorough review; the app that turns meeting notes into to-do lists does not. Tiering vendors by inherent risk at this stage keeps your team focused on the relationships that could actually hurt you, rather than having a poor intern from the sticky-notes app fill out the same 200-question security form as your data warehouse.
2. Risk analysis and mitigation
Once you've gathered the information, analyze what it reveals and decide what to do about the gaps. Every vendor carries some inherent risk; the question is how much of it remains after their methods (and yours) are accounted for. That residual risk is what you're really managing.
You can mitigate situations where the risk is still high. You could require the vendor to remediate a control gap, limit what data or systems they can access, or, sometimes, decide the vendor isn't worth the trouble and walk away. The goal of this stage is to decide whether and how to proceed.
3. Contracting
The contract is where your risk decisions become enforceable. This is the stage to lock in the specifics: service level agreements, security and privacy requirements, breach notification timelines, audit rights, and clear roles and responsibilities on both sides. For vendors handling regulated data, this is also where data processing agreements or business associate agreements get signed.
Don't skip the exit terms. Plenty of programs leave offboarding undefined until the relationship ends badly. Nobody wants to think about the breakup while signing the contract, but sorting out how the relationship ends (and who gets to keep the dog) is a lot easier before the fact.Â
4. Onboarding
Onboarding is where the vendor actually gets access, and it deserves more care than it typically gets. Grant access on a need-to-know basis: only what the vendor needs to access to do their job, nothing more. Then document exactly what was granted, to whom, and under what conditions. Keeping a single, clear record of every connection and credential makes monitoring and, eventually, offboarding clean instead of chaotic.
This is also the stage where speed most tempts people into shortcuts. Fast-tracking a vendor's permissions to hit a Friday happy hour is how you end up with a marketing tool that somehow has access to all your data and company secrets. Resist the urge to loosen access controls just to move faster.
5. Continuous monitoring
Continuous monitoring is how you catch what changes after the ink dries. A vendor may take on a new subcontractor, lose compliance with a control or security measure, or have a poor Q4, sending the CEO on a downsizing spree that wipes out half the cybersecurity team.Â
Set a monitoring cadence tied to each vendor's tier: high-risk, business-critical vendors get frequent oversight, while lower-risk ones can coast on lighter periodic reviews. The goal is an always-on view of your vendor portfolio, so you hear about a problem from an internal source, not the local journalist asking if you want to give a comment to the paper.Â
6. Offboarding
When a vendor relationship ends, the access doesn't automatically end with it. Lingering accounts, active API keys, and shared credentials that were never rotated are exactly the kind of forgotten doors attackers love to find (not to mention the dog situation, which you should have ironed out in step 3).
A clean offboarding means shutting down accounts, revoking keys, rotating any shared secrets, removing the vendor from your directories and identity systems, and confirming that your data is returned (or deleted) per the contract. Then write down what you removed, so when someone asks in 18 months whether that long-forgotten vendor still has a way in, the answer is a confident "no" instead of a nervous "let me check."
TPRM best practices
You don't need an enterprise-sized team to run TPRM well. You need a repeatable process and the discipline to actually follow it when everyone's slammed. A few practices worth building in from the start:
Define your goals. Before you evaluate a single vendor, clarify what the program is for and what "acceptable risk" means at your company (because "we'd prefer not to get breached" isn't a policy). Clear objectives across security, compliance, operations, and finance are what let you pick the right tools and tell whether the program is working or just generating paperwork.
Talk with key stakeholders. TPRM isn't just for IT and the security team. Every department in your organization could hold a key piece of the picture, and each of them will happily point out the risk you missed after the fact if you didn't ask them first. Pulling them in early helps reduce silos where important risks slip through the cracks between departments.
Assess your vendors. Standardize how you evaluate vendors so every review measures the same things, and you can actually compare one against another. Use a consistent questionnaire, ask for evidence instead of assurances (a current SOC 2 report beats a vendor's word that they're "very secure"), and score each one against the risk criteria you set up front. That consistency is also what keeps a single rushed assessment from quietly becoming the weakest link in the whole program.
Automate your processes. The manual version of TPRM—spreadsheets, email chains, and calendar reminders you'll definitely honor this time—stops scaling somewhere around your fifth vendor. Zapier connects the tools in your TPRM stack under one governed layer, so a new vendor can automatically kick off an onboarding task, monitoring alerts can land in Slack, and reassessment reminders can fire on schedule without a human having to remember them. All of this is backed by enterprise-grade governance and AI security capabilities that add an extra layer of protection to your data.
Monitor your data consistently. A program that only checks in at annual review time is flying blind for eleven months out of twelve. Bake ongoing monitoring into the routine, so you're always working from a current picture of each vendor's risk, not a snapshot from last spring that's long since been overtaken by events.
Reduce risk with Zapier
Third-party risk management is critical for your business, and it's become even more of a focal point with AI. Every vendor, app, and coffee supplier has their own AI processes that read your CRM, answer help-desk tickets, and take action across tools. The more you connect—both external vendors and the internal AI systems you rely on—the harder it is to control.
Zapier sits in front of those connections as a governed access layer. With it, you can define which apps can connect to your systems, what actions are allowed, and where AI can run, with rules enforced across every workflow. Capabilities like action restrictions, app access controls, and AI Guardrails live in every corner of Zapier's enterprise-grade governance, so you can build AI systems with confidence across 9,000+ apps.Â
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