Vulnerability Assessment and Management Services: Scan, Prioritize, Patch
A vulnerability scan that produces a 400-page PDF is a scan, not a program. Vulnerability management services close the loop: find the weakness, decide which ones matter this week, fix them, and prove they stayed fixed. NetSys runs that loop every week for its clients, on the same devices and servers it already manages.
The short answer
Vulnerability management services find weaknesses in your software and configurations, rank them by how likely they are to be exploited in your environment, fix or mitigate them and verify the fix, week after week rather than once a year. NetSys scans endpoints, servers, firewalls and Azure resources continuously with Defender Vulnerability Management and network scanning, patches through Intune and server maintenance windows, and reports monthly on what was found, fixed and accepted. It is included in the managed agreement and available standalone for businesses with internal IT, delivered remotely anywhere in the United States.
Attackers work from lists. A vulnerability with a public exploit and an exposed service gets tried across the whole internet within days of disclosure, and the firewall or VPN appliance nobody has updated in two years is on that list. Vulnerability management is how a business finds out before the attacker does, and it only works as a routine. The scan that ran once in January protects nobody in September.
The failure mode is volume. Scanners rank everything by a generic severity score, so the list has thousands of items, the team fixes the easy ones, and the one that matters sits at number 41. We rank by exploitability in your environment: is it reachable from the internet, is there a working exploit, does it sit on a machine that holds credentials. That reduces the list to what gets done this week.
Weekly Loop, Monthly Proof
Endpoints and servers report through Defender Vulnerability Management continuously; network appliances and anything without an agent are scanned weekly; external-facing systems are scanned from outside, as an attacker would see them. Each week an engineer reviews new findings, marks the ones that are exploitable and reachable, and schedules the fix: Intune for workstations, maintenance windows for servers, vendor firmware for firewalls and switches. Where a patch cannot be applied, we document the mitigation and the risk acceptance. The monthly report shows time to remediate by severity and the open exceptions, which is what an auditor or insurer asks for.
What Vulnerability Management Covers
Discovery and Scanning
Every asset, on a schedule.
- Agent-based scanning of Windows, macOS and servers through Defender Vulnerability Management
- Weekly network scans of firewalls, switches, printers, cameras and other agentless devices
- External scans of public-facing systems and DNS, the view an attacker has
- Asset inventory kept current, because the unknown machine is the one that gets you
Prioritization
Fix the forty that matter, not the four thousand.
- Ranked by exploit availability, internet exposure and what the affected machine can reach
- Known-exploited vulnerabilities and vendor emergency advisories handled out of cycle
- Line-of-business software that blocks a patch handled with the vendor, not ignored
- Weekly fix list agreed with your account manager so there are no surprise reboots
Patching and Remediation
The fix, not the finding, is the deliverable.
- Workstation patching through Intune with pilot rings, so a bad update hits five machines before five hundred
- Server maintenance windows scheduled, tested and documented
- Firmware updates for firewalls, VPN appliances and switches, the devices most often left behind
- Configuration fixes: weak TLS, exposed management ports, default credentials
Verification and Reporting
Prove it stayed fixed.
- Rescan after every remediation cycle to confirm closure
- Monthly report: findings by severity, time to remediate, open exceptions with owners
- Evidence packaged for NY DFS, HIPAA, PCI DSS, CMMC and cyber-insurance reviews
- Included in the NetSys managed agreement; standalone available for in-house IT teams
Why Businesses Choose NetSys for Vulnerability Management
Fifteen minutes with a NetSys engineer, not a salesperson, and you will know where your vulnerability management stands and what it would take to fix it. Call 845-203-3914 or request a call to discuss the scope and next steps.
Who does the work: meet the NetSys team on our About page.
- Scanning, prioritization and patching run by one team, so findings do not sit in a queue between vendors
- Ranked by exploitability in your environment, which turns thousands of findings into a weekly list
- Firewalls and VPN appliances included, since those are the devices attackers scan for first
- Pilot rings and maintenance windows, so patching does not become the outage
- Reports written for auditors and insurers, showing time to remediate rather than raw counts
- Month to month, with no long-term contract
Scan cadence at a glance
The cadence behind the weekly loop, as it runs for managed clients:
| What is covered | How | How often |
|---|---|---|
| Windows and macOS endpoints and servers | Defender Vulnerability Management agent | Continuously |
| Firewalls, switches, printers, cameras and other agentless devices | Network scan | Weekly |
| Public-facing systems and DNS | External scan, from an attacker's point of view | At least weekly |
| Actively exploited flaws and vendor emergency advisories | Handled out of cycle | The day they appear |
| New findings | An engineer marks what is exploitable and reachable, then schedules the fix | Weekly |
| Fixed findings | Rescan to confirm closure | After every remediation cycle |
How those patches get installed, tested and verified: patch management services.
Workstation patches go out through Intune pilot rings and server patches in scheduled maintenance windows, so a fix does not become an outage.
Vulnerability assessment, vulnerability management and penetration testing compared
Three services that are often confused. They answer different questions, and most businesses need the second and an occasional third:
| Vulnerability assessment | Vulnerability management | Penetration test | |
|---|---|---|---|
| What it is | Scanners plus an engineer's review that find and rank known weaknesses | The assessment repeated on a schedule, with fixes made and verified | A tester tries to chain weaknesses into a real intrusion |
| How often | Once, as a snapshot | Continuously for computers and servers with an agent, weekly for network and external scans | At a point in time, within an agreed scope |
| Exploits what it finds | No | No | Yes, within the agreed scope |
| What you get | A ranked list of findings | A weekly fix list, patches applied, rescans and a monthly report on time to remediate | Evidence of what an attacker could do with the weaknesses that remain |
Vulnerability management keeps the known weaknesses down; a penetration test checks what is left. Our penetration testing service starts with a free external test.
Inside the monthly vulnerability report
The report's structure, section by section. The figures in yours come from your own environment:
| Section | What it shows | Who uses it |
|---|---|---|
| Summary | Open findings by severity | Owners and leadership |
| Time to remediate | How long findings took to close, by severity | Auditors and insurers |
| Closed and verified | Findings fixed this cycle and confirmed closed by rescan | Your IT contact |
| Open exceptions | Findings that cannot be patched yet, with the mitigation, the risk acceptance and a named owner | Leadership and auditors |
| Out-of-cycle fixes | Actively exploited flaws and emergency advisories handled between cycles | Anyone checking how fast urgent issues were handled |
The report is written to answer audit and insurance questions from records, showing time to remediate rather than raw counts.
Where we deliver Vulnerability Management
Vulnerability Management in New York City · Vulnerability Management in Nassau County, NY · Vulnerability Management in Suffolk County, NY · Vulnerability Management in Philadelphia. We also support clients remotely wherever their systems run. See all locations and service areas.
Vulnerability Management FAQs
What is vulnerability management?
Vulnerability management is the continuous cycle of finding weaknesses in software, firmware and configuration across your systems, ranking them by real risk, fixing or mitigating them, and verifying the fix held. It is a program with a cadence, not a single scan. NetSys runs it weekly for managed clients and reports monthly on what was found, fixed and accepted.
What is a vulnerability assessment?
A vulnerability assessment is a structured check of your systems for known weaknesses, such as missing patches, outdated firmware, exposed services and weak configurations, with each finding ranked by risk. It combines scanners with an engineer's review and does not try to exploit what it finds. Done once, it is a snapshot; repeated on a schedule with fixes tracked to closure, it becomes vulnerability management.
How do you do a vulnerability assessment?
List every asset in scope: computers, servers, network gear, cloud resources and public-facing addresses. Scan them with an agent on computers and servers, a network scan for devices without one, and an external scan from the internet. Have an engineer confirm which findings are real, reachable and exploitable, then rank them by exploit availability, internet exposure and what the machine can reach. Fix or mitigate from the top, starting with actively exploited flaws, rescan to confirm closure, and record any exception with its mitigation and a named owner.
What is the difference between a vulnerability assessment and a penetration test?
A vulnerability assessment finds and ranks known weaknesses across every system, using scanners plus an engineer's review, without trying to exploit them. A penetration test is narrow and deep: it tries to chain weaknesses into a real intrusion, at a point in time. You need both: vulnerability management repeats the assessment on a schedule, and testing shows what an attacker could do with what remains. Our penetration testing service starts with a free external test.
How often should we scan for vulnerabilities?
Continuously for endpoints and servers with an agent, weekly for network devices without one, and from outside at least weekly for anything public-facing. Emergency advisories for actively exploited flaws are handled the day they appear. Quarterly scanning, which some compliance frameworks set as a floor, leaves months between disclosure and discovery.
Do we need vulnerability management services if we already patch automatically?
Automatic updates handle Windows and some applications on machines that are on and connected. They do nothing for firewall firmware, the VPN appliance, the printer with an admin page, the server someone excluded from updates, or the configuration weaknesses no patch fixes. Vulnerability management verifies that automatic patching worked and covers everything it missed.
How much do vulnerability management services cost?
Scanning, prioritization, patching and reporting are included in the all-inclusive month-to-month NetSys managed agreement. For businesses with in-house IT that want the program standalone, pricing depends on asset count and whether we perform remediation or hand a prioritized list to your team; we quote after a short scoping call. Defender for Business, part of Microsoft 365 Business Premium, supplies the endpoint vulnerability data.
How do we get started with vulnerability management?
The free assessment is a remote external penetration test, limited to the information available to NetSys and the external scope we agree with you. An internal vulnerability assessment and ongoing remediation program are scoped separately. Call 845-203-3914 or use the contact page to discuss the next step.
Can we buy vulnerability scanning services on their own?
Yes, for businesses with in-house IT. We run the scanning and the prioritization, then either hand your team a ranked weekly fix list or carry out the remediation as well. The price depends on asset count and which of those you choose, and we quote after a short scoping call.
Guides on this topic
- Penetration Testing (Free External Test)
- Penetration Testing vs Vulnerability Scanning
- Network Security & Firewall Management
- Microsoft 365 Security Hardening
- Patch Management for Small Business
- Patch management vs vulnerability management
- Vulnerability assessment tools for small business
- What a vulnerability assessment is, defined
- next-generation firewall (NGFW)
- Microsoft 365 security assessment
- Log4j / Log4Shell, Explained for Business Owners: Are You Exposed?
Turn a scan backlog into a weekly fix list.
Bring the last scan report anyone ran. We re-rank it by what is reachable from outside and whether a working exploit exists, which is how a list nobody reads becomes the short list that gets done this week. The monthly report shows time to remediate, which is what an auditor asks for.