Cybersecurity Services in the Tri-State Area
Attackers do not care which side of the Hudson your office is on, but regulators do. NetSys protects companies in all three states with managed detection and response, locked-down identities and tested backups, plans the breach notices each state requires, and has engineers at your door from Brooklyn when the office is inside our on-site area.
The short answer
NetSys provides managed cybersecurity across the Tri-State Area. Every device runs ThreatDown detection and response alongside Defender for Business; every sign-in goes through multifactor checks and Conditional Access; mail passes through Barracuda; staff train with KnowBe4; Rapid7 scans for missing patches; and Datto or Veeam keeps immutable backups. Our monitoring never stops, and within about 50 miles of Park Slope engineers arrive in person to contain incidents and rebuild firewalls, while farther sites are handled remotely. Our one free offer is a remote external penetration test against a scope we agree with you.
Service information by The NetSys Group. Our editorial standards.
How cybersecurity is delivered across the region
Monitoring has no geography. Every endpoint, mailbox and firewall at every site reports into the same tools, and an engineer can isolate a laptop in Danbury as fast as one in Downtown Brooklyn. Physical response does have geography. Inside our roughly 50-mile on-site area, engineers come from Park Slope to pull a machine for imaging, swap a compromised firewall or check closet and badge access. In the 50-to-60-mile band a visit waits until we confirm the drive time, and beyond that, containment and rebuilds run remotely while your staff handle the hardware with an engineer guiding them. Ransomware, account takeover and email compromise bypass the help desk queue and land with your dedicated engineer. Monitoring runs 24/7 from Brooklyn, and so does emergency service. Our staffed help-desk hours are 4 a.m. to 11 p.m. Eastern time, seven days a week. The proposal states severe-incident escalation, authorized remediation and any other after-hours work.
What recent regional incidents show
Local governments and hospitals have supplied hard lessons. Suffolk County detected a BlackCat ransomware attack on September 8, 2022, refused the $2.5 million demand and ran departments offline for months; a county-commissioned investigation later traced the first intrusion to December 2021, about nine months earlier. On November 27, 2024, ransomware closed Hoboken City Hall and suspended the city's online services. In October 2023 a cyberattack on WMCHealth, the Valhalla-based hospital network, led to ambulance diversions at two of its Hudson Valley hospitals. The pattern repeats: attackers sit quietly for weeks, copy data before they encrypt anything, and the organizations that recover fastest are the ones with offline backups and a plan they have rehearsed.
Controls we run at every site
The stack is identical wherever the office is. ThreatDown managed detection and response and Defender for Business watch every Windows and Mac device. Entra ID requires multifactor sign-in with number matching or passkeys, and Conditional Access blocks unmanaged devices and impossible-travel sign-ins. Barracuda filters inbound mail and flags impersonation of executives and vendors. Keeper replaces shared spreadsheets of passwords. Rapid7 InsightVM scans for missing patches, including any Windows Server 2016 machines, which drop out of extended support on January 12, 2027. KnowBe4 runs phishing simulations and short training. Firewalls at every location share one policy set, and Datto SIRIS or Veeam keeps immutable backups. Each control leaves a record, so an insurer or auditor receives evidence rather than assurances.
Three states, three breach-notice rules
A single incident can involve residents of all three states, and each has its own clock. New York gives a business 30 days from discovery to notify affected residents under General Business Law 899-aa, and the Attorney General, Department of State and State Police must hear as well, as must DFS for its licensees. New Jersey's statute (N.J.S.A. 56:8-163) has the business alert the Division of State Police ahead of any customer notice. Connecticut's section 36a-701b sets a 60-day limit, requires notice to the Attorney General no later than residents and calls for 24 months of identity protection when Social Security numbers are exposed. Connecticut also shields businesses from punitive damages if they keep a written program based on a recognized framework such as the NIST Cybersecurity Framework or the CIS Controls. This is general information, not legal advice.
Insurers, clients and examiners asking for proof
Most security work in the region is now driven by someone else's questionnaire. Cyber insurers ask about multifactor authentication, endpoint detection, backups and training before they renew. Larger clients send vendor security reviews to their law firms, accountants, agencies and suppliers. DFS-licensed firms on either side of the Hudson answer to Part 500, which since November 1, 2025 has required multifactor authentication for all users and a documented asset inventory. Defense suppliers on Long Island and in New Jersey still owe NIST SP 800-171 controls and a current SPRS score, even though the Department of War suspended CMMC Phase 2 in July 2026. We keep the evidence for each in one place and answer the questionnaires from what is actually deployed.
Cybersecurity in the Tri-State Area: what NetSys delivers
Watch and respond
- ThreatDown MDR and EDR on every device, with a 24/7 team that isolates and investigates rather than emails
- Rapid7 InsightIDR or Microsoft Sentinel collecting identity, email, endpoint and firewall logs so an intrusion is visible in one place
Harden the tenant and the people
- Microsoft Defender for Business, Entra ID Conditional Access and phishing-resistant sign-in for finance staff
- Legacy authentication off, dormant accounts closed, forwarding rules and consent grants reviewed monthly
Measure and recover
- Rapid7 InsightVM scans of the internal and external footprint, with a monthly fix list
- Managed firewall with intrusion prevention, segmentation and vendor access that is logged and switched off when the work ends
Law office: layered security on Microsoft 365 with cloud-to-cloud backup
A 25-attorney firm needed client confidences protected better than a closet server could manage. Alongside a Microsoft 365 migration, NetSys layered anti-phishing and email threat protection, DNS filtering, multifactor authentication on every account and endpoint protection across attorney devices in the office and remote, and established independent cloud-to-cloud backup of the entire tenant because the recycle bin is not a backup strategy for privileged material. The firm reported 82% fewer IT support incidents per month within two quarters.
Cybersecurity work for other clients
- Insurance
Regional title insurance company
Barracuda email protection for 85 users, phishing simulations, employee security training, and MFA deployment.
Security Awareness & Phishing TrainingIT for Insurance Agencies and Brokers
Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a the Tri-State Area client.
What cybersecurity costs in the Tri-State Area
Cybersecurity is priced per user per month when it runs as an ongoing service, and per project for an assessment or a remediation. What moves the number: how many devices and identities are in scope, how much incident remediation and recovery is needed beyond the monitoring and authorized MDR actions in scope, which compliance standard the evidence has to satisfy, and whether the Microsoft 365 tenant is already on Business Premium or the security tooling comes from us. The free external penetration test costs nothing and runs remotely before any of that. Our managed IT pricing page explains how the fee is built.
Who this fits, and who it does not
Best fit: businesses with enough people, money movement or regulated data that a breach would hurt, and no security team of their own: professional practices, healthcare groups, importers, financial firms, nonprofits and agencies holding client credentials. Companies with an internal IT person fit as a co-managed arrangement.
Read next
Industry pages: IT for Financial Services · IT for Legal
Terms used on this page: Managed Detection and Response (MDR) · Endpoint Detection and Response (EDR) · Conditional Access
Guides: MDR versus antivirus for a small business · the Conditional Access policies to turn on first
Related pages
Read the full Cyber Security service page. See everything NetSys delivers in Tri-State Area.
Also in the Tri-State Area: IT Support · Managed IT Services
Cybersecurity elsewhere: New York City · Brooklyn, NY · Nassau County, NY · Suffolk County, NY · Westchester County, NY · Stamford, CT
Related services: Penetration Testing · Cyber Insurance Readiness · Security Assessments · Managed Detection & Response (MDR)
Cybersecurity in the Tri-State Area: FAQs
Do you provide on-site cybersecurity in the Tri-State Area?
Yes, inside our on-site area of about 50 miles from Park Slope, covering New York City, the Long Island suburbs out to about Hauppauge, Westchester and Rockland, North and Central Jersey and Connecticut's shoreline towns up to Norwalk. Engineers come on site to contain incidents, collect machines for forensic imaging, and install or reconfigure firewalls. For places 50 to 60 miles out we confirm drive time first, and farther sites are protected and supported remotely. Detection and response run 24/7 everywhere, because containment happens through software before anyone travels.
How much do cybersecurity services cost in the Tri-State Area?
Most clients get security inside their managed IT agreement, priced per user per month once we have assessed the environment; it can also run alone beside another provider's day-to-day support. The price depends on users and devices, the servers and cloud workloads to protect, Microsoft 365 licenses you already own, the compliance evidence your industry needs and whether you want vCISO time for policies and insurer reporting. Penetration testing beyond the free external test, and incident response for organizations that are not yet clients, are quoted separately.
Which cybersecurity requirements apply to businesses in the Tri-State Area?
The baseline is each state's data-security and breach law: New York's SHIELD Act requires reasonable safeguards for New Yorkers' private information, while New Jersey and Connecticut set their own breach-notice duties. Industry rules sit on top: 23 NYCRR Part 500 for DFS licensees, the HIPAA Security Rule for healthcare, the FTC Safeguards Rule and IRS Publication 4557 for tax preparers, SEC Regulation S-P for advisers and broker-dealers, ABA Model Rule 1.6(c) for lawyers, and NIST SP 800-171 for defense suppliers.
Where should a company with several offices start?
With the free external penetration test, a remote probe of everything you expose to the internet at every location, run inside a written scope, because attackers start from the outside too. Multi-site companies often turn up a forgotten firewall, an old VPN portal or a remote desktop port left open at a branch. In parallel we review Microsoft 365 sign-in policies, which usually matter more than any single office. Internal testing, device reviews and compliance evidence are scoped separately once you have the external results.
What happens if one of our offices is hit by ransomware?
Call your dedicated engineer or the main line; ransomware never waits in a queue. We isolate affected devices through ThreatDown, cut the site's tunnels to other offices if needed, revoke sessions, reset credentials and preserve evidence for your insurer and counsel. Inside our on-site area an engineer comes to pull machines; elsewhere your staff handle hardware with an engineer on the phone. Recovery runs from immutable backups once the environment is clean. Every one of the more than 30 ransomware incidents NetSys handled in the past three years ended in full recovery.
See what an attacker sees before they do.
The free assessment is a remote external penetration test, limited to the information available to NetSys and the external scope we agree with you. Internal reviews and ongoing security management are scoped separately.