Your Vendors Are Using AI Whether You Know It or Not: A 2026 Guide to Third-Party Risk

Here's an uncomfortable question worth asking your leadership team this month: do you actually know which of your vendors are using AI to process your data, and how?

If you're not sure, you're not alone. Recent industry research found that a majority of organizations are only partially aware of which of their vendors use AI — and for the first time, vendor AI risk has tied cybersecurity as the top third-party concern for businesses across industries. That's a significant shift, and it's happening at the same time third-party breaches are climbing sharply: vendor involvement in data breaches has roughly doubled year-over-year, with vendors and software supply chains now a primary path attackers use to reach their real target — you.

Why This Is Suddenly Urgent

A few converging trends explain why vendor risk management can no longer be an annual questionnaire you send out and forget about.

AI adoption is outpacing oversight. Vendors are embedding AI into products at a rapid pace — often without clearly disclosing it to customers. A vendor handling sensitive data may be feeding it into a third-party AI model you've never heard of, for purposes you never approved.

Breaches are increasingly starting with vendors, not you. Several high-profile incidents this year involved attackers compromising a single vendor — sometimes through something as simple as one phishing email — and using that foothold to reach multiple downstream organizations. Healthcare, financial services, and professional services firms have all been affected by exactly this pattern.

Regulatory expectations are catching up. Frameworks like the EU's Digital Operational Resilience Act now require continuous vendor risk assessment and documented remediation plans, not one-time due diligence. Regulators globally are moving in the same direction: vendor oversight is becoming an ongoing obligation, not a checkbox at contract signing.

Most teams are stretched thin. Many organizations manage hundreds of vendor relationships with only one or two people responsible for oversight. That gap between the scale of the risk and the resources dedicated to managing it is exactly where problems slip through.

What This Means If You're a Small or Mid-Size Business

You don't need a Fortune 500 vendor risk program to meaningfully reduce your exposure. You need a clear, consistently applied process for understanding who your critical vendors are, what data they touch, whether AI is part of their service, and what happens if something goes wrong on their end.

The organizations that get burned aren't usually the ones without any vendor management process — they're the ones whose process hasn't kept pace with how their vendors' technology, including AI, has changed.

Practical Takeaways

Some concrete steps to strengthen third-party oversight without adding significant overhead:

• Inventory your critical vendors — the ones with access to sensitive data or systems — and rank them by the risk they pose, not just by contract size.

  
  

• Ask directly whether AI is involved. Add a standard question to vendor due diligence and renewal cycles: "Does your product use AI or machine learning to process our data, and if so, how?"

  
  

• Review contracts for AI and data-use language. Many existing vendor agreements were signed before AI features were added to the product — make sure your contracts reflect what the vendor actually does today.

  
  

• Move from annual questionnaires to ongoing monitoring. Even a simple quarterly check-in on your top-tier vendors is a meaningful improvement over a once-a-year form.

  
  

• Have an incident response plan that includes vendors. If a critical vendor is breached, know in advance who needs to be notified, what your contractual rights are, and how quickly you can respond.

Where to Start

If your vendor risk program hasn't been updated to account for how much AI has changed the vendor landscape, you're not behind — most organizations are in the same position right now. But this is a good moment to close that gap before it becomes a bigger problem.

Compliance Labs helps small and mid-size businesses build practical, right-sized vendor and third-party risk management programs — ones that fit your team's actual capacity, not a template built for a much larger organization. If you'd like a second set of eyes on your current vendor risk approach, reach out and let's set up a consultation.