Because your security is only as strong as the weakest partner with a login.

Modern businesses don’t operate alone. You’ve got cloud platforms, IT contractors, marketing tools, payroll services – and they all help keep things running.
But each of those partners, apps, and platforms can also be a doorway into your systems. And if they don’t take security seriously, you could be the one paying the price.
So let’s talk about third-party risk, and what to do about it before it becomes your next big problem.

Why vendors are a security concern

Every time you give a third-party company access to your systems, data, or employees — whether that’s a shared folder, admin login, or API key – you’re extending your perimeter.

That means:

• If they get hacked, your data could be exposed.
• If they misconfigure something, you may be the one breached.
• If they don’t have strong security, you’re now carrying their risk.

Real-world breaches often start not with your systems, but with someone you trusted.

Common vendor risk

• Weak security practices (e.g., shared logins, no MFA)
• Unvetted tools or software brought in by staff (“shadow IT”)
• No visibility into what data a vendor has — or how it’s protected
• No offboarding of third-party access when contracts end

What leaders should ask

You don’t need to manage every vendor yourself – but you do need to make sure someone is asking:

1. Do we vet vendors before giving access?
   Ask: “Do we check what security measures a vendor has in place before working with them?”
2. What access have we given — and is it too much?
   Ask: “Are vendors only able to see and do what they absolutely need?”
3. Do we remove access when a contract ends?
   Ask: “Do we have a checklist for revoking access from former vendors?”
4. Do we have contracts that include security requirements?
   Ask: “Does our agreement make clear who’s responsible if something goes wrong?”
5. Are vendors reviewed regularly?
   Ask: “Do we ever go back and re-check if a vendor’s still safe and needed?”

Tips for smarter vendor management

• Keep a list of all third-party tools, platforms, and vendors with access to your data.
• Limit access to the bare minimum — and give it a time limit if possible.
• Require MFA for any vendor accessing your systems.
• If a tool isn’t officially approved, don’t let staff use it just because it’s “handy.”

In short…

Trust is good, but verification is better. Vendor risk isn’t about paranoia; it’s about knowing who you’re working with and making sure their standards match your own. Because one weak link in someone else’s chain can become your biggest problem.