Cybersecurity & IT Support in Brooklyn, New York
We are not a Manhattan firm that will drive to Brooklyn. Our office is at 1 Prospect Park SW in Park Slope — it is the only office The NetSys Group has, and it has been the base for this work since 1998. For Brooklyn businesses that is the shortest version of on-site support we offer anybody.
The short answer
The NetSys Group is a cybersecurity and managed IT company headquartered in Brooklyn, at 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215 — our only office. We provide Brooklyn businesses with layered cybersecurity (multifactor authentication, managed endpoint detection and response, email and DNS filtering, 24/7 monitoring, immutable tested backups, staff training), managed and co-managed IT, Microsoft 365 and cloud administration, disaster recovery, and the free on-site penetration test — delivered at your premises, which for Brooklyn clients means the shortest travel we do for anyone. Every NetSys client hit by ransomware has fully recovered: a 100% record. Agreements are month to month.
- Headquarters: 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215 — our only office
- Serving businesses from Brooklyn since 1998
- Shortest on-site response we offer anywhere — this is our home borough
- 100% of NetSys clients hit by ransomware have fully recovered
- Month-to-month agreements — 98% client retention
The engineer on the phone is the engineer who can be at your door
Most managed IT is delivered from somewhere else. Ours is delivered from Park Slope, which changes the arithmetic for Brooklyn businesses in a way that is hard to overstate: a security walkthrough before a lease is signed, a look at a cabling closet in a converted industrial building, a hardware swap that would otherwise wait for a scheduled visit. None of that is a premium add-on here. It is a short trip.
Brooklyn's business mix has a specific security profile
The borough runs on professional practices, medical and dental offices, creative and production companies, food and goods businesses moving physical inventory, and importers working around the ports. What those share is thin internal IT and real exposure — payroll and patient data on one side, wire instructions and supplier fraud on the other. Layered defense matters more than any single product, and immutable backups matter more than everything.
Who this fits in Brooklyn
Businesses that have outgrown a break-fix arrangement or an all-purpose local computer shop and want security depth without hiring for it. If you already have someone internal, co-managed IT reinforces them. If you are opening a second location, multi-site connectivity is core to our practice — our published medical case study connects seven locations in real time.
A 30-person practice with two Brooklyn locations
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.
One office in Downtown Brooklyn, a second in Bay Ridge, and the two behave like separate companies — separate file storage, separate printers, staff emailing documents to themselves to move between sites. Security is an antivirus product that came with the laptops and a backup drive somebody swaps on Fridays, when they remember. A phishing email recently reached the whole staff list and at least one person clicked.
- The free on-site penetration test at the Downtown office to establish, concretely, what an attacker would reach and how fast
- Both sites connected over encrypted site-to-site networking so the practice runs as one network with one set of permissions
- Managed endpoint detection and response replacing consumer antivirus across every device at both locations
- Email security, DNS filtering and staff awareness training aimed at the attack that already landed
- The Friday backup drive replaced with immutable offline backups, and a restore run and documented
- 24/7 monitoring behind all of it, with a named account manager whose mobile number is a real one
Both sites work off one managed environment, the clicked-phishing scenario has a detection and response path behind it rather than luck, and recovery is a tested procedure instead of a hope. Engineers are twenty minutes away when hands are needed.
Services in Brooklyn, NY
Industry depth: IT for Healthcare · IT for Law Firms · IT for Importers
Brooklyn, NY FAQs
Are you actually based in Brooklyn?
Yes — 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215, and it is the only office The NetSys Group has. We are not a firm with a Brooklyn mail drop and staff somewhere else. This is where our engineers and account managers work from, and it is why Brooklyn clients get the shortest on-site travel we offer anyone.
What cybersecurity services do you provide Brooklyn businesses?
Layered defense rather than a single product: multifactor authentication and access controls, managed 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 needing security leadership without the salary, the vCISO programme. Every NetSys client hit by ransomware has fully recovered — a 100% record.
How fast can someone get to my office?
Faster than anywhere else we serve, because this is our home borough — though we will not quote you a guaranteed number of minutes we cannot honour in traffic. What we will say plainly is that on-site work in Brooklyn is routine rather than exceptional, it does not carry a travel premium, and the free on-site penetration test happens at your premises.
Do you work with small businesses, or only larger companies?
Both, though the honest answer is that the model fits best once a business has enough people or enough regulatory exposure that an outage or a breach really hurts — typically from around ten staff upward, earlier for medical, legal and financial practices. Below that, a fifteen-minute engineer call will usually tell you whether you need managed IT yet or just need two or three things fixed properly.
Can you support a Brooklyn office and staff working from home?
Yes, and it is now the normal shape of the work. 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 Brooklyn office; everything else follows your people wherever they log in.
What does it cost?
Pricing is per user and per environment, built from what is actually in place rather than from a package menu — headcount, servers, what already exists versus what has to be built, and how much on-site work you realistically need. We publish how a quote gets constructed rather than making you request it, and every agreement runs month to month, so the price has to keep being worth paying.
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.