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Concentration Risk

Concentration risk is the danger that many of your vendors rely on the same cloud provider, AI model or other supplier underneath. If that one supplier fails, changes its terms or has a breach, several of your tools are hit at once.

What is concentration risk?

Concentration risk means too much of your stack depends on one company you may never have signed a contract with. Your CRM, help desk and analytics tool may look like three separate vendors. Underneath, they may all run on the same cloud host or send data to the same AI model.

Those shared suppliers are your vendors' subprocessors, and the risk they carry is called fourth-party risk. Concentration risk is what you get when many of your vendors share the same fourth party. It can also mean leaning on one direct vendor for too many jobs, but the hidden version is the shared supplier underneath.

A real change we caught

Venpo found that at least 30 vendors added Anthropic as a subprocessor since September. Each vendor made its own choice, but together they point the data of many companies toward one AI provider. Cloud is no different: Stripe added Microsoft Azure and Snowflake as cloud subprocessors.

Why it matters to you

Outages. When a shared cloud region or AI model goes down, several tools fail on the same day. Your backup plan may assume one tool fails at a time.

Data. One shared supplier may hold pieces of your data from many directions. A breach or a policy change there reaches further than any single vendor contract suggests.

Notice. You often learn about a new shared supplier only from a subprocessor list update. Stripe's DPA, for example, gives notice "at least 30 days before the changes take effect," but only to users who subscribe to email notifications for its subprocessor list.

Your own customers. Your customers may ask which AI providers or cloud hosts process their data. If you only know your direct vendors, you cannot answer.

What to check

  • Read the subprocessor list of every vendor that holds important data, and note the cloud host and any AI providers.
  • Count how many of your vendors share each of those suppliers. The ones that show up most are your concentration points.
  • Subscribe to each vendor's subprocessor update emails where they offer them.
  • Ask critical vendors which region they run in and whether they can fail over to another one.
  • Check that your business continuity plan covers several tools failing at once.

How Venpo helps

Venpo watches the subprocessor lists of the vendors you add and emails you a plain-English alert when one adds or removes a supplier, so you can see when the same cloud or AI provider appears across your stack. Each vendor gets a change history you can look back on.

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Frequently asked questions

What is an example of concentration risk in SaaS?

Several of your tools run on the same cloud provider or send data to the same AI model. One outage or breach at that provider affects all of them at once.

Is concentration risk the same as fourth-party risk?

They are related. Fourth-party risk is the risk from your vendors' own suppliers, and concentration risk is the extra exposure when many vendors share the same supplier.

How do I find out which AI model my vendors use?

Check each vendor's subprocessor list and AI terms, which often name the AI providers. If the list is vague, ask the vendor directly in writing.

Related terms

Vendor Management Fourth-Party Risk Fourth-party risk is the risk from your vendors' own vendors, such as the cloud host or AI provider a tool uses to process your data. For software, these are mostly the subprocessors on a vendor's subprocessor list. AI and Your Data AI Subprocessor An AI subprocessor is an outside AI company, such as OpenAI, Anthropic or Google, that one of your vendors uses to process your data when you use the vendor's AI features. Vendor Documents Subprocessor List A subprocessor list is a public page where a vendor names the other companies that handle your data for it, with what each one does, where it is, and what data it touches. It changes whenever the vendor adds or drops a provider. Comparisons Third-Party vs Fourth-Party Risk Third-party risk comes from the vendors you sign up with directly. Fourth-party risk comes from your vendors' own vendors, such as the cloud hosts and AI providers they use to run their service. You have a contract with the first group, but usually not with the second. Change Monitoring Subprocessor Monitoring Subprocessor monitoring means tracking the outside companies your vendors use to handle your data, and noticing when a vendor adds or removes one, so you can review the change and object in time if you need to. Vendor Management Vendor Lock-In Vendor lock-in is when leaving a vendor would cost so much time, money or data that you stay even when you would rather go. It usually comes from data you cannot easily export, long commitments and workflows built around one tool.

Sources

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