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2026

Now taking on 4 new clients this year — white-glove onboarding, month to month.

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Managed IT Services in Brooklyn & New York City

The NetSys Group is headquartered at 1 Prospect Park SW in Brooklyn — so for New York City businesses, the engineer who answers your call can also stand in your server room. Managed IT, cybersecurity, cloud, and disaster recovery, delivered on-site across the five boroughs since 1998.

Book the Free On-Site Pen Test

The short answer

NetSys is a Brooklyn-headquartered managed IT and cybersecurity provider serving businesses across New York City and the metro area. Engineers work on-site throughout the five boroughs — including the free on-site penetration test — backed by 24/7 remote monitoring. 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.

Common Questions

Brooklyn & 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%.

Local enough to show up

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.