Managed IT Services in New York City
The NetSys Group is headquartered in New York City — one office, at 1 Prospect Park SW in Brooklyn. For businesses anywhere in the five boroughs that means the engineer who answers your call can also stand in your server room. Managed IT, outsourced IT support, cybersecurity, cloud, and disaster recovery, delivered on-site across Manhattan, Brooklyn, Queens, the Bronx and Staten Island since 1998.
The short answer
NetSys is a managed IT services and IT support company headquartered in Brooklyn, at 1 Prospect Park SW — our only office, and it is in New York City. We deliver managed IT, outsourced IT support, and cybersecurity services to businesses across Manhattan, Brooklyn, Queens, the Bronx, and Staten Island: on-site engineer visits including the free on-site penetration test, 24/7 remote monitoring, Microsoft 365 and cloud management, and tested disaster recovery. Agreements are month to month, and every client gets a dedicated account manager with their real cell number.
- Headquarters: 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215
- On-site engineer visits across the five boroughs and NYC metro
- The free on-site penetration test is delivered at your office
- Month-to-month agreements — no long-term contracts
Why NYC businesses work with a Brooklyn-based team
Remote support solves most problems; the rest need someone at your rack, your front desk, or your conference room. Being headquartered in Brooklyn means on-site work in the city is routine for us, not a premium add-on — from cabling closets in older buildings to security walkthroughs of a new office before move-in.
What we deliver on-site in New York City
The free on-site penetration test — a NetSys engineer safely demonstrating how an attacker would get into your business — happens at your office. So do network buildouts, server work, security remediation, and the discovery sessions that start a managed relationship. Day-to-day monitoring and support then run 24/7 from our systems, with on-site dispatch whenever hands are needed.
Who this fits
Growing NYC businesses that need enterprise-grade security without an in-house security team: professional firms, healthcare practices, importers and distributors working around the ports, and any organization that's outgrown reactive break-fix IT. Our published case studies — a seven-site medical practice, a law office, two international importers — show the model.
A 60-person professional firm in Midtown Manhattan
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.
Two floors of a multi-tenant building, a Microsoft 365 tenant inherited from a departed office manager, staff in the office three days a week and at home the other two, and a break-fix provider who bills hourly and only appears once something is already down. Nobody can say who has access to what, and the last backup restore was never actually tested.
- Discovery on-site, then the free on-site penetration test — an engineer demonstrates the realistic path into the business and leaves a prioritized fix list you keep either way
- Microsoft 365 tenant review: dormant accounts closed, legacy authentication switched off, multifactor and Conditional Access applied, and a real backup put behind the tenant
- Endpoint detection and response deployed to every laptop, including the ones that only ever appear on the home network
- Site-to-site and remote access rebuilt so the two floors and the home users behave like one managed network
- A recovery plan written down, then a restore actually run against it rather than assumed
Day-to-day support moves to a helpdesk with 24/7 monitoring behind it, an engineer comes back to the building whenever something needs hands, and leadership gets a plain-language picture of what is covered and what still needs attention. The agreement runs month to month.
Services in New York City
Industry depth: IT for Healthcare · IT for Law Firms · IT for Importers
New York City FAQs
Do you actually come on-site in NYC?
Yes — we're headquartered in Brooklyn at 1 Prospect Park SW, and on-site engineer visits across the five boroughs are a normal part of service, starting with the free on-site penetration test if you want to see us work before hiring us.
What services do NYC clients typically start with?
Most start with the free on-site pen test or a 15-minute engineer call, then move into managed IT or co-managed IT with cybersecurity built in. Cloud migration and disaster recovery engagements are scoped from there.
Do you require contracts?
No — every NetSys agreement is month to month. We keep clients by performing; our retention rate runs 98%.
What does outsourced IT support in NYC 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, endpoint detection and response, email filtering, immutable backups), vendor management with your ISP and software providers, and on-site engineer dispatch from our Brooklyn office when something needs hands. It runs month to month, and you get a dedicated account manager rather than a ticket queue.
Are you a managed IT services company based in Brooklyn?
Yes. The NetSys Group is headquartered at 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215 — our one and only office, and where our engineers and account managers work from. Brooklyn clients get the shortest version of our on-site travel, and the rest of New York City is a normal day's work from here.
What cybersecurity services do you provide to NYC businesses?
Layered defense rather than a single product: multifactor authentication and access controls, endpoint detection and response on every device, email and phishing protection, DNS filtering, 24/7 log monitoring with real-time alerting, immutable offline backups with tested restores, and staff awareness training. On top of that sit the free on-site penetration test and, for firms that need security leadership without the salary, our vCISO program. Every NetSys client hit by ransomware has fully recovered — a 100% record.
Can you support a NYC office and remote staff at the same time?
Yes — that is the normal shape of the work now. We secure the office network and the home setups behind it: managed devices, hardened remote access, Conditional Access policies, and cloud platforms like Microsoft 365 and Azure managed centrally. On-site work happens at your New York office; everything else follows your people wherever they log in.
Start with fifteen minutes — or a free on-site pen test.
Talk to a NetSys engineer about your environment, or book the free on-site penetration test and watch us find what an attacker would.