Authored by: Bryan Lachapelle, President & CEO
You’ve invested in a solid firewall. You’ve trained your staff to spot phishing emails. On paper, your business feels well protected. But what about everyone else you rely on? Your accounting firm. Your cloud hosting provider. The SaaS tool your marketing team swears by. Each one of these vendors has some level of access to your systems or your data. And if they leave the door unlocked, your business is exposed too. This is the supply chain cybersecurity trap.
Attackers know it’s often easier to break into a smaller, less secure vendor than to attack a well-protected organization directly. Once inside, they use that vendor’s trusted access as a shortcut into your systems. High-profile incidents like the SolarWinds breach showed just how damaging these attacks can be. Even strong internal security won’t help if the threat comes through a partner you trust.
Third-party cyber risk is one of the biggest blind spots for organizations today. You may have evaluated a vendor’s pricing and services - but have you looked at how they handle security? How they train their staff? What they do if something goes wrong? Assuming those answers are “good enough” is a risky gamble.
When a vendor is compromised, your data is often the target. Attackers may gain access to customer information, financial records, or sensitive business data stored with - or accessible through - that vendor. They can also use the vendor’s systems to launch attacks that look legitimate, making them much harder to detect.
The fallout goes far beyond the initial breach. You may face regulatory penalties for failing to protect data, serious damage to your reputation, and significant recovery costs. Governments and regulators have taken note of this risk, and the lesson applies just as strongly to private organizations of all sizes.
There’s also a major operational impact that often gets overlooked. Your IT team suddenly has to drop everything - not to fix your own systems, but to investigate how a third party was breached. Days or even weeks can be spent reviewing logs, resetting credentials, tightening access controls, and reassuring clients and partners. That disruption slows everyday work, delays strategic projects, and puts real strain on your most critical staff. The true cost isn’t just fines or fraud - it’s the time and momentum you lose cleaning up someone else’s security failure.
A vendor security assessment is simply due diligence. It moves the relationship from “trust us” to “show us.” This should start before you sign a contract and continue throughout the relationship.
You don’t need to be overly technical, but you do need clear answers to a few key questions:
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What security certifications do they hold, such as SOC 2 or ISO 27001?
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How is your data stored, protected, and encrypted?
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What is their process for notifying you if a breach occurs?
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Do they regularly test their systems for weaknesses?
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How do they control and monitor access for their own employees?
The quality and transparency of the answers will tell you a lot about how seriously a vendor takes security.
Resilience means accepting that incidents can happen - and being prepared for them. A one-time security check isn’t enough. Ongoing monitoring can alert you if a vendor appears in a new breach or if their security posture changes over time.
Contracts are another powerful tool. They should clearly outline cybersecurity expectations, include audit rights, and define how and when you must be notified if a breach occurs. Many organizations require notification within 24 to 72 hours. These clauses turn good intentions into enforceable commitments.
Here are a few realistic steps to strengthen vendor security without overwhelming your team:
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Create a vendor inventory and assign risk
List all vendors with access to your systems or data and rank them by risk. A vendor with administrative access is high risk; one that only receives newsletters is low risk. Focus your efforts where the risk is highest. -
Start the conversation
Send a basic security questionnaire and review vendor policies. This often uncovers gaps — and encourages vendors to improve their practices. -
Avoid single points of failure
For critical services, consider backup vendors or splitting responsibilities so one breach doesn’t stop everything.
Managing vendor risk isn’t about creating tension or distrust. It’s about raising the bar together. When you set clear expectations, your partners are more likely to strengthen their own security - and everyone benefits. Proactive vendor risk management turns your supply chain from a hidden weakness into a strategic advantage. It also shows clients, partners, and regulators that you take security seriously at every level. In today’s connected world, your security perimeter extends far beyond your office walls.
If you’d like help identifying your highest-risk vendors or building a practical vendor risk management program, we’re here to help.
