Managed IT Services in Nassau County, New York
Nassau County sits inside the New York metropolitan area we already cover on-site, and its business mix, medical and dental practices, law firms, accounting practices, and family-owned operators around Garden City, Mineola and Hicksville, is close to the centre of what NetSys does. Managed IT, cybersecurity, and disaster recovery, on month-to-month terms.
The short answer
NetSys provides managed IT services and cybersecurity to businesses across Nassau County, New York — Garden City, Mineola, Hicksville, Great Neck, Hempstead and the surrounding communities. Nassau County falls inside the New York metropolitan area, one of our named on-site coverage regions, so engineers travel to Long Island for work that needs hands. The free external penetration test runs remotely, before you hire us. The service itself is the same everywhere: helpdesk and patching, 24/7 monitoring, endpoint detection and response, identity and email security, Microsoft 365 and cloud administration, and immutable backups with restores we test rather than assume. Our headquarters is at 1 Prospect Park SW in Brooklyn; we do not claim a Long Island office. Agreements run month to month.
- Nassau County falls within the NY metro area — a named NetSys on-site coverage region
- Practice depth: a published seven-location medical case study and a law-office case study
- Free external penetration test, run before you hire us
- 100% of NetSys clients hit by ransomware have fully recovered
- Headquarters: Brooklyn, NY — no Long Island office claimed
We’re a member here
We hold membership in the local business organization covering Nassau County, NY — so you can check us out in someone else’s directory instead of taking this page’s word for it. Membership is an affiliation, not an endorsement of our work.
- Farmingdale Chamber of Commerce · Farmingdale, NY
A county built on regulated practices
Nassau's commercial character is dominated by professional practices — medical, dental, legal, accounting — clustered around Garden City, Mineola and the hospital corridor. Those businesses carry regulated data on small headcounts, which is the exact profile that gets hurt worst by ransomware and phishing: enough valuable data to be a target, rarely enough internal IT to be a hard one. Our published medical case study, covering seven connected locations, is the closest analogue in our portfolio.
Multi-site is the normal shape here
Practices on Long Island grow by opening another location rather than by filling a bigger one, and the technology usually does not keep up: separate file stores, separate printers, patient or client records emailed between sites because nothing else connects them. Encrypted site-to-site networking so several offices behave as one managed environment is core to our practice, not a special project.
Who this fits in Nassau County
Medical and dental groups, law and accounting firms, and family-owned businesses that have outgrown a break-fix relationship. If you already have an internal IT person, co-managed IT adds 24/7 coverage and security depth behind them. If you are opening a second or third location, the connectivity and security architecture should be designed once rather than improvised three times.
A four-location dental group around Garden City and Mineola
A composite example of work we do, written so you can picture the first 90 days. It is not a specific client — our real, named engagements are in case studies.
Four offices, roughly 50 staff, and practice-management software holding patient records at each site with no reliable connection between them. Backups are a local appliance at each location that nobody has restored from. Front-desk staff share a login at two of the sites. The group's owner has read enough about ransomware in healthcare to be worried, and has been told by an insurer that the current arrangements will not renew as they are.
- The free external penetration test at the largest site, establishing the realistic path to patient data and producing a prioritized fix list
- Shared logins eliminated — individual accounts with multifactor authentication, so access to patient records is attributable to a person
- The four sites connected over encrypted site-to-site networking, mirroring the architecture in our published seven-location medical case study
- Managed endpoint detection and response across every workstation, with 24/7 monitoring behind it
- Immutable offline backups replacing the local appliances, with a restore actually performed at one site and timed
- Documentation of controls, access and recovery procedure sufficient to answer the insurer's renewal questions truthfully
Patient records live in one managed environment with attributable access, recovery is a tested procedure with a measured recovery time, and the insurance renewal is answerable from documentation. Engineers travel to the sites when hands are needed; everything else runs remotely.
Services in Nassau County, NY
Industry depth: IT for Healthcare · IT for Law Firms · IT for Accounting Firms
Next steps: See the security assessment scope · Take the free cybersecurity assessment · Microsoft 365 management & backup · Depth for law firms · IT support in Great Neck · Managed IT in Garden City
Nearby: Great Neck, NY · Garden City, NY · Uniondale, NY · Jericho, NY · Suffolk County, NY · New York City
NetSys vs. CMIT Solutions
CMIT Solutions ranks on the first page for IT services in Nassau County, NY. Their column below is drawn from their own published pages and links to each source. Ours states what we publish. Put the same questions to both.
| The NetSys Group | CMIT Solutions | |
|---|---|---|
| Agreement | Month to month. Leave any time, no early-exit penalty. | The CMIT Solutions of Las Vegas office publishes an FAQ page stating 12-month standard agreements with month-to-month renewal, no multi-year lock-in, and 30 days' written notice to terminate. (cmitsolutions.com) |
| What the monthly fee covers | One agreement: AI services, cybersecurity, managed IT with help desk, PAM, PIM and disaster recovery planning. | The corporate IT services index page lists fourteen service lines: Managed AI, Managed Detection and Response (MDR), Cybersecurity, IT Support, Managed Services, Productivity Applications, Cloud Services, IT Network Support Services, Compliance, CMMC Compliance, Data Backup and Recovery Services, Unified Communications, IT Guidance, and IT Procurement. (cmitsolutions.com) |
| Privileged access and credentials | PAM and PIM in the base agreement, each with a published service page describing the work. | Privileged access management is described on the domain within an educational blog article's table of cybersecurity solution categories, in the Access Control and Authentication section. (cmitsolutions.com) |
| AI and automation | In-house practice led by Jamie Baum: readiness assessments, Copilot rollouts, custom agents and workflow automation. | The corporate Managed AI Solutions page describes an AI practice covering shadow-AI discovery, selection of business-grade AI tools, acceptable use policy development, access controls for sensitive data, logging of AI tool usage for compliance visibility, and integration with applications including Microsoft 365, Google Workspace and Slack; the page attributes delivery to a nationwide network of 900+ IT and cybersecurity professionals. (cmitsolutions.com) |
| Disaster recovery | A written plan plus restores that are performed and timed. More than 30 ransomware incidents handled in three years, every one recovered. | The corporate data backup page distinguishes data backup from disaster recovery services, describes backup frequency as based on Recovery Point Objective (RPO), includes a monthly backup testing service description, and describes cloud failover environments that allow employees to work while primary systems are restored. (cmitsolutions.com) |
| Who answers | A NetSys engineer, plus a named account manager who gives you a real cell number. | The corporate IT support page states support is available 24/7 through online chat, phone, email and text, that most issues are resolved remotely with on-site support when required, and that the customer selects the response time period. (cmitsolutions.com) |
| Response commitments | Written into the agreement rather than implied on the website. | The corporate service-packages page describes three support tiers: time-and-materials hourly fees for remote and on-site support; unlimited remote support with time-and-materials on-site; and unlimited 24/7/365 live help desk with priority on-site support. (cmitsolutions.com) |
| Proof before you commit | A free Tier 1 external penetration test. The findings are yours whether or not you hire us. | The Nassau office Manhasset page publishes an AI Readiness Self-Assessment described as free and taking five minutes, scored across Productivity, Security, Tools & Integration, Automation, and Team Culture, followed by a free 30-minute AI strategy call. (cmitsolutions.com) |
| Where they are | One office, in Brooklyn. On-site coverage across the New York metro, Long Island, the Hudson Valley, New Jersey, Connecticut, Pennsylvania, Maryland, Delaware and Florida, and remote delivery anywhere in the US. | The Nassau, NY office page describes the local office as part of a North American network of more than 250 locations, lists a local address at 640 Broadway, Massapequa, NY 11758, and lists service areas including Albertson, Great Neck, Jericho, Manhasset, Port Washington, Syosset, and Woodbury. (cmitsolutions.com) |
CMIT Solutions appears here because it ranked on the first page of search results for IT services in Nassau County, NY when we checked in September 2026. Everything in their column is drawn from pages published on https://cmitsolutions.com/ and links to the source. Where we could not find something published we say so, which means we did not find it, not that it does not exist. We make no claim about the quality of their service. All trademarks belong to their owners and no affiliation or endorsement is implied.
Also ranking for IT services in Nassau County, NY: WheelHouse IT · smartIT · Computero.
Service pages for Nassau County, NY
Comparing us with other Nassau County, NY providers
We researched every firm below from what it publishes about itself, and each page says plainly when they are the better fit.
Nassau County, NY FAQs
Do you serve Long Island and Nassau County?
Yes. Nassau County sits within the New York metropolitan area, which is one of our named on-site coverage regions, so engineers travel to Long Island for work needing hands: network and server work, and the discovery session that opens a managed relationship. The free external penetration test runs remotely before either. Our office is in Brooklyn and we do not claim a Long Island address; what we do claim is that Nassau is inside the area we already cover.
Do you have experience with medical and dental practices?
Yes, and it is published rather than asserted. Our medical case study covers a practice running seven locations connected in real time over an encrypted VPN mesh, and we maintain a dedicated medical compliance practice. Regulated-data environments — where access has to be attributable, backups have to be provably restorable, and downtime has direct patient impact — are a core part of the work rather than an adjacent one.
Can you connect several Nassau County offices together?
Yes, and on Long Island it is usually the first thing worth fixing. Encrypted site-to-site networking makes several locations behave as one managed environment with one set of permissions, which removes the habit of emailing records between offices because nothing else connects them. Our published medical case study runs seven locations on exactly that architecture.
What happens if we get hit by ransomware?
The honest answer is that the outcome is decided before the attack, by whether your backups are immutable and whether anyone has actually restored from them. Every NetSys client hit by ransomware has fully recovered — a 100% record — and that record rests on tested restores rather than luck. We put immutable offline backups in place, run and document a real restore, and write down the recovery-time objective so you know the answer before you need it.
Do you require a long-term contract?
No — every NetSys agreement is month to month, on Long Island as everywhere else. We keep clients by performing rather than by locking them in; retention runs 98%.
What does managed IT in Nassau County include?
A full IT department without the headcount: a helpdesk your staff can call, 24/7 monitoring and patching across every server and workstation, the security stack behind it — multifactor authentication, managed endpoint detection and response, email filtering, DNS protection, immutable backups — plus Microsoft 365 and cloud administration, vendor management with your ISP and software providers, and on-site engineer dispatch when something needs hands. You get a dedicated account manager rather than a ticket queue.
Start with fifteen minutes, or a free external pen test.
Talk to a NetSys engineer about your environment, or book the free external penetration test and watch us find what an attacker would.