How is this different from a vulnerability scan?

A vulnerability scan checks hosts you already know about. We first discover your full external surface — including shadow IT and cloud — then score every IP and service by risk.

Can it find assets we've forgotten about?

Yes. Discovering shadow, abandoned and forgotten servers and cloud infrastructure is a core part of the assessment and a common source of breaches.

Does it help with PCI DSS?

Yes. A clear, current view of your external surface reduces and accelerates PCI DSS scoping and scanning and supports your compliance evidence.

ImmuniWeb Use CasesNetwork Security Assessment Services

Network Security Assessment Services

Powered by ImmuniWeb Discovery

Production-safe network security assessment powered by our award-winning ImmuniWeb® Discovery attack surface management. We fingerprint every exposed port and service, surface shadow IT and abandoned servers, and give you risk-based scoring per IP — without disrupting or slowing your network.

Production-Safenon-intrusive scanning, no downtime

Risk-Based Scoringclear priority for every IP and service

Shadow IT & Cloud Discoveryfind forgotten, exposed assets

Continuous Monitoringdetect new exposure as it appears

Get a Demo Download Sample PDF Report

Why Network Security Assessment Is a Business Revenue Lever

You can't protect what you can't see — and forgotten servers, open ports and shadow cloud infrastructure are exactly where breaches start. A continuous, risk-based view of your external network shrinks your attack surface, cuts the cost and scope of pentests and PCI DSS scans, and keeps enterprise buyers confident in your security.

Comparison matrix:

With an ImmuniWeb Network Assessment

Full inventory of exposed services, including shadow IT
Risk-based priorities focus effort where it matters
Smaller, cheaper pentest and PCI DSS scope
Production-safe scanning with no downtime
Continuous detection of new exposure

Without Network Security Assessment

Forgotten servers and open ports invisible until exploited
Flat vulnerability lists with no business context
Bloated, expensive testing of an unknown surface
Intrusive scans that risk disrupting services
Point-in-time blindness between annual audits

Vulnerability Scanning vs Full Network Security Assessment

	Traditional Vulnerability Scan	ImmuniWeb Network Assessment
Coverage	Known IPs you remember to scan	Full external surface, including shadow IT
Impact	Can be intrusive and disruptive	Production-safe, non-intrusive
Output	Raw vulnerability list	Risk-based scoring per IP and service
Cadence	Point-in-time	Continuous monitoring
Value	Volume of findings	Prioritized attack-surface reduction

Recommendation: A vulnerability scan tells you what's wrong on the hosts you already know about. A network security assessment first tells you what you actually expose — including shadow and forgotten assets — then scores it by risk. Start with discovery and scoring, then focus pentest budget where the real exposure is.

Comprehensive Network Assessment Scope

We map and assess your external network attack surface across four dimensions, production-safely:

Asset & Service Discovery

External IP, domain and subdomain discovery
Open-port detection across the full range
Smart fingerprinting of running services and versions
Shadow IT, abandoned and forgotten servers

Exposure & Configuration

Publicly exposed admin and management interfaces
Insecure SSH/RDP and remote-access exposure
TLS/SSL configuration and certificate review
Exposed databases and storage services

Vulnerability & Risk Scoring

Outdated services with known CVEs
Risk-based scoring per IP address and service
Production-safe analysis with no service disruption
Prioritization to reduce attack surface

Cloud, Shadow IT & Standards

Shadow cloud infrastructure discovery
Multi-environment (on-prem + cloud) coverage
Continuous monitoring for new exposure
Support for PCI DSS scoping and scanning

Network Attack Surface Risk Areas

Exposed Open Ports

We detect every open port and the service behind it.

Outdated Services & CVEs

We fingerprint versions and flag known vulnerabilities.

Shadow IT & Forgotten Servers

We surface assets no one is tracking or patching.

Exposed Admin Interfaces

We flag management panels reachable from the internet.

Insecure Remote Access

We detect weak or exposed SSH, RDP and VPN endpoints.

Weak TLS/SSL

We review certificates and protocol/cipher configuration.

Exposed Databases

— We find publicly reachable databases and data stores.

Shadow Cloud Infrastructure

We discover untracked cloud assets widening exposure.

Misconfigured Services

We flag risky service configurations and defaults.

Attack-Surface Drift

We continuously detect newly exposed or changed assets.

The 6-Phase Network Assessment Workflow

Scoping & Onboarding

We agree the IP ranges, domains and environments in scope. Artifact: a scoping document and asset list.

Phase 1

Phase 2

Asset & Surface Discovery

We discover external assets, including shadow IT and cloud. Artifact: a complete external attack-surface inventory.

Port & Service Fingerprinting

We analyze every open port and identify service and version. Artifact: a fingerprinted service map.

Phase 3

Phase 4

Risk Scoring & Validation

We score each IP and service by risk, validated by analysts. Artifact: a risk-prioritized, false-positive-free findings list.

Reporting & Remediation Guidance

You receive an audit-ready report with clear priorities. Artifact: report mapped to PCI DSS and your risk register.

Phase 5

Phase 6

Continuous Monitoring

We keep watching for new exposure and changes. Artifact: ongoing alerts and an updated attack-surface view.

Continuous Monitoring & Attack Surface Reduction

Network exposure changes daily as teams spin up servers and cloud resources. ImmuniWeb® Discovery continuously monitors your external surface and alerts you to newly exposed ports, services and shadow assets — so reducing attack surface becomes an ongoing, measurable process instead of a once-a-year audit. Findings export to your SIEM and risk register for action.

Industry-Specific Network Threat Modeling

Network exposure risk is not one-size-fits-all. We tailor the assessment to your sector:

Finance & Payments

External-surface and segmentation visibility to support PCI DSS scoping and reduce the cost of compliance scanning.

Manufacturing & Critical Infrastructure

Discovery of exposed OT-adjacent services and remote-access endpoints aligned with NIS 2 and IEC 62443 concerns.

Enterprise & Multi-Cloud

Shadow IT and shadow-cloud discovery across mergers, regions and business units to eliminate blind spots.

Frequently Asked Questions

Q

Will the assessment disrupt my network?

A

No. Our scanning is non-intrusive and production-safe by design — it gathers what you need without slowing down or disrupting your services.
Q

How is this different from a vulnerability scan?

A

A vulnerability scan checks hosts you already know about. We first discover your full external surface — including shadow IT and cloud — then score every IP and service by risk.
Q

Can it find assets we've forgotten about?

A

Yes. Discovering shadow, abandoned and forgotten servers and cloud infrastructure is a core part of the assessment and a common source of breaches.
Q

Does it help with PCI DSS?

A

Yes. A clear, current view of your external surface reduces and accelerates PCI DSS scoping and scanning and supports your compliance evidence.

Validated by 1,000+ Global Customers & Top Analysts

dunnhumby leverages ImmuniWeb Discovery to, among other things, help identify security vulnerabilities and misconfigurations externally exposed in our environment and particularly in third-party hosted applications. ImmuniWeb Discovery is also successfully used to monitor and rapidly identify dunnhumby’s data exposed on the Dark Web, as well as to detect other types of security incidents. The high quality of findings and surprisingly low false positive rate produced by ImmuniWeb Discovery means it represents an immediate value to our Security Operations team.