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What Is a Vulnerability Assessment Service?
A vulnerability assessment is a systematic security review that identifies and enumerates known vulnerabilities across your internal network, internet-facing systems, cloud environments, and applications. It combines non-exploitative unauthenticated scans (external attacker perspective) with authenticated, credentialed checks (trusted-user perspective) to produce a complete, prioritized view of your security exposure — without actively exploiting identified vulnerabilities. This makes it the right choice when minimizing business disruption is critical while still gaining deep visibility into your security gaps.
Why Do You Need a Vulnerability Assessment?
Modern attackers combine information from internet-facing systems with any foothold they can gain inside the network. A vulnerability assessment mirrors that dual perspective — external and internal, unauthenticated and authenticated — to reveal patch gaps, misconfigurations, and exposed services before they are chained together into a breach. It is also the fastest way to produce the evidence required by auditors for PCI DSS, ISO 27001, GDPR, and NIS2 compliance, with prioritized remediation guidance your team can act on the same week.
What We Assess
A Penteor vulnerability assessment covers your entire attack surface — from internet-facing systems including internal endpoints, cloud resources, and applications — using the right combination of unauthenticated and authenticated checks for each asset class.
Types of Vulnerability Assessment
A vulnerability assessment is defined by two independent choices: where we test from (external, internal, or both) and whether we log in (unauthenticated or authenticated). Together they describe the attacker perspective being simulated and the depth of visibility you get.
External Vulnerability Assessment
Runs against your internet-facing perimeter — firewalls, VPN gateways, mail, DNS, and public web applications. Unauthenticated by default, it mirrors exactly what an attacker on the open internet can enumerate and target.
Internal Vulnerability Assessment
Runs from inside the network — servers, workstations, Active Directory, cloud VPCs. Can be performed remotely via the Penteor Testing Appliance, and split into two modes depending on whether we use credentials.
Simulates a breached attacker already on the LAN. Reveals exposed services, default credentials, protocol weaknesses, and CVEs on open ports.
Logs in with service credentials you provide to inspect each host from inside — missing patches, weak permissions, outdated software, hardening gaps. Finds far more real issues.
Internal scans — both unauthenticated and authenticated — can be delivered remotely. We deploy the Penteor Testing Appliance in your network (hardware or VM) and run the full assessment through a secure, encrypted tunnel — no travel required.
Remote Internal Scans with the Penteor Testing Appliance
Internal vulnerability assessments — especially authenticated ones — need direct network reachability to every target. Rather than travel on-site, we deploy the Penteor Testing Appliance (PTA) directly inside your internal network. Available as a pre-configured hardware box or as a virtual machine image, the PTA establishes a secure, encrypted tunnel to our scanning infrastructure, enabling authenticated and unauthenticated scanning across your internal environment with the same depth and quality as on-site testing — and without the cost or scheduling overhead of travel.
Your Network
Internal assets, servers, workstations, cloud VPCs, databases
Penteor Testing Appliance
Hardware or virtual machine · Plug-and-play · Encrypted tunnel
Penteor Scanning Team
Certified analysts run the full assessment remotely
Vulnerability Assessment Methodology
Our methodology combines external unauthenticated scanning (what an external attacker can see), internal unauthenticated scanning (what an attacker sees after gaining access to the LAN), and authenticated credentialed checks (what a trusted insider or compromised administrator could discover). Each finding is manually validated, CVSS scored, and prioritized by exploit availability and asset criticality.
security testing
Testing Lifecycle
Every vulnerability assessment follows the same repeatable lifecycle — from initial scoping through discovery, unauthenticated and authenticated scanning, manual validation of each finding, and a CVSS-scored report with prioritized remediation guidance.