The request usually arrives from somewhere else: a larger client's procurement team, a cyber insurance renewal, or a new compliance requirement. Someone asks for 'a security assessment,' and the business isn't sure whether that means a scan that takes an hour or an engagement that takes weeks. The two are genuinely different tools, priced and scoped very differently, and picking the wrong one wastes money either way.
Vulnerability scans: fast, automated, technical
A vulnerability scan uses automated tools to check your systems — servers, endpoints, network devices, sometimes web applications — against a database of known vulnerabilities: unpatched software, misconfigurations, weak encryption, exposed ports and services. It runs on a schedule (often monthly or quarterly) and produces a report ranking issues by severity.
Good for: ongoing hygiene, catching missed patches, satisfying compliance requirements that ask for regular scanning, and giving IT a prioritized to-do list. Not designed for: understanding how vulnerabilities chain together, testing human factors like phishing susceptibility, or evaluating vendor and third-party risk.
Third-party risk audits: broader, often manual, business-focused
A risk audit looks past your own infrastructure to evaluate the vendors, contractors, and software providers who have access to your systems or data. This has become a bigger issue as businesses increasingly rely on cloud SaaS tools, outsourced IT, and subcontractors — any one of which can become the entry point for an attack on you, even when your own systems are well protected.
A proper third-party risk audit typically reviews: what data each vendor can access, what security certifications or controls they maintain, whether they've had prior breaches, and what happens contractually if they're compromised and it affects you.
Penetration testing: the third option people often confuse with both
Worth mentioning because it's frequently conflated with scanning: a penetration test has a live tester actively attempting to exploit vulnerabilities and move through your network, the way a real attacker would — not just listing what's theoretically weak. It's more expensive and time-intensive than a scan, and typically only necessary for higher-risk environments, larger organizations, or specific compliance mandates (like PCI-DSS for businesses handling card payments).
Matching the assessment to the actual requirement
Before booking anything, get specific about what's actually being asked for. If a client's security questionnaire wants proof of 'regular vulnerability management,' a scanning program with quarterly reports usually satisfies it. If a cyber insurance renewal or a larger client's vendor risk team wants a full risk assessment including your own vendor relationships, a scan alone won't be enough.
A reasonable baseline for most small and mid-size businesses
Quarterly vulnerability scans as an ongoing baseline, with a full third-party risk review annually or whenever a major new vendor or client relationship requires it. This combination satisfies most compliance and insurance requirements without over-spending on assessments beyond what your risk profile actually calls for.
Not sure which one your specific requirement calls for? Find your plan or book a free 15-minute call and we'll help you scope it correctly.