Cyber Security Manhattan: Protection for Law, Finance and Professional Firms
NetSys provides cybersecurity services to businesses in Manhattan: 24/7 managed detection and response on every device, identity and email protection across Microsoft 365, vulnerability scanning, staff training and immutable backups, with an engineer acting on alerts rather than forwarding them.
The short answer
NetSys provides cybersecurity to businesses in Manhattan: ThreatDown managed detection and response on every device, multifactor authentication and Conditional Access across Microsoft 365, Barracuda email protection, Rapid7 vulnerability scanning, security awareness training and immutable backups with tested restores. On-site visits are scheduled from our Brooklyn office. The help desk is staffed seven days a week from 4 a.m. to 11 p.m. Eastern time, and monitoring and emergency service run 24/7. Ongoing agreements run month to month.
Service information by The NetSys Group. Our editorial standards.
How cybersecurity is delivered in Manhattan
Our office is at 1 Prospect Park SW in Brooklyn. Engineers schedule visits for work that needs hands, with access and travel agreed for your address. 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. Confirm landlord access, circuit diversity, cabling and equipment space before approving a network change. Carrier options to check in Manhattan include Verizon Fios, Spectrum Business, Lightpath and Crown Castle fiber; availability, routing and installation dates must be verified at your address before a failover design is approved.
Who cybersecurity in Manhattan is built for
Businesses we can support in and around Midtown, the Financial District, Hudson Yards, the Flatiron District and the Upper East Side include law firms on iManage, hedge funds and family offices on Bloomberg Terminal, wealth managers and RIAs on Orion, accounting firms on Thomson Reuters CS Professional Suite, agencies and media companies on HubSpot, and real estate and property managers on Yardi Voyager. These are examples of business and application needs, not a list of local clients. We coordinate infrastructure, identity and integration with the application vendor, and identify any compliance requirements during discovery. Companies with an internal IT person can agree a split of responsibilities, systems and coverage hours before work begins.
Continuity planning for your Manhattan business
Start with the systems your team cannot work without. Record the impact of a building power outage, a failed internet circuit, a compromised account and an unavailable application vendor. Then agree recovery priorities, an independent access path, protected backup copies and a test for each critical workflow. Controls reduce particular risks; they do not guarantee that an incident cannot happen.
Cybersecurity in Manhattan: what NetSys delivers
Detection and response
- ThreatDown managed detection and response with EDR agents on every workstation, laptop and server, monitored 24/7
- Microsoft Defender for Business and Rapid7 InsightIDR telemetry from identities, email and endpoints, with a person acting on alerts
- Isolation of a compromised device in real time, with an engineer on the case rather than a ticket in a queue
- Incident investigation and a written timeline for leadership, counsel and your insurer
Identity and email
- Entra ID Conditional Access and multifactor authentication across Microsoft 365, with legacy authentication switched off
- Privileged access and privileged identity management so admin rights are granted just in time and removed afterwards
- Barracuda Email Protection in front of every mailbox, with SPF, DKIM and DMARC enforced
- KnowBe4 security awareness training with simulated phishing built from the lures your industry receives
Exposure and recovery
- Rapid7 InsightVM vulnerability scanning on a schedule, with findings fixed rather than filed
- Cisco Meraki or Fortinet firewall management, segmentation and DNS filtering on office and remote devices
- Immutable backups through Datto SIRIS or Veeam, with restores tested and documented
- The free remote external penetration test, limited to available information and the external scope agreed with you
A 12-person law firm in the Flatiron District
This planning example shows how we could scope the work. It is not a claim about a customer in this market or a measured result. For published customer work, see our case studies.
A law firm in the Flatiron District with 12 staff, client data in iManage and five permanent Global Administrators in the tenant. The antivirus came bundled with the laptops and nobody has looked at it since. There is no multifactor authentication on three of the admin accounts, a former employee's login is still active, the backups have never been restored, and a written incident response plan does not exist.
- ThreatDown MDR and EDR deployed to every workstation, laptop and server, including the ones partners use from home, with the console monitored 24/7
- Rapid7 InsightVM deployed for scheduled vulnerability scanning, with the first month's findings prioritized and closed
- Cisco Meraki firewall installed with intrusion prevention, geo-blocking, segmentation between finance, servers, printers and guests, and DNS filtering on every device
- KnowBe4 rolled out with a baseline phishing test in week one and training on a recurring schedule, aimed at the lures the industry actually receives
- Rapid7 InsightIDR collecting identity, email, endpoint and firewall logs so an intrusion is visible in one console
- Monthly review of dormant accounts, forwarding rules, consent grants and administrator assignments, reported in writing
The exposure is measured monthly and closed, the people are trained against the lures they actually receive, and an incident has a plan with names on it. Leadership sees a written report every month. Terms stay month to month.
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
- Construction and trades
Commercial electrical contractor
MFA rollout for 50 employees, secure mobile access to project files, and Microsoft 365 account management.
- Healthcare
Outpatient mental health practice
Support for 32 clinician workstations, secure telehealth access, patient record backups, and phishing protection.
- Real estate
Residential real estate brokerage with four offices
Email protection for 64 agents, secure transaction document sharing, mobile access, and Microsoft 365 administration.
Microsoft 365 Security HardeningIT for Real Estate and Property Management
Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Manhattan client.
Compliance in Manhattan: the SHIELD Act and what sits on top of it
The New York SHIELD Act (General Business Law § 899-bb) requires reasonable administrative, technical and physical safeguards for covered private information. The small-business standard considers the size and complexity of the business and the sensitivity of the information; it is not a general small-business exemption. The service scope should identify the records, access controls, retention settings and incident evidence your business needs; your legal or compliance adviser determines which requirements apply. The security service is built to produce the evidence those rules ask for: multifactor authentication and Conditional Access reports, endpoint detection coverage, vulnerability scan results, backup restore records and a tested incident response plan. Discovery identifies missing records and assigns the documentation work. Applicable duties depend on the business, data, exemptions and contracts; your legal or compliance adviser determines which requirements apply.
Primary sources
What cybersecurity costs in Manhattan
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.
Not a fit: organizations that want a security product installed and left alone. The service is monitored, reviewed and reported monthly, and it changes the way administrators, finance staff and vendors work. If that is not wanted, a tool purchase serves better than an engagement.
Read next
Industry pages: IT for Legal · IT for Hedge Funds & Family Offices
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 Manhattan, NY.
Also in Manhattan: IT Consulting · Managed IT plans and pricing · IT Support · Network Security
Industry pages for Manhattan: IT Support for Law Firms in Manhattan
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 Manhattan: FAQs
Will cybersecurity services help us pass a cyber insurance questionnaire?
Yes. Multifactor authentication, endpoint detection and response, tested offline backups and security awareness training are the four controls almost every questionnaire asks about, and the service produces the evidence for each. Our cyber insurance readiness page lists what carriers are asking for in 2026.
What happens if we are breached?
The MDR team isolates the affected device, an engineer investigates and a written timeline goes to leadership, your counsel and your insurer. The incident response plan we write during onboarding names who does what, so the first hour is not spent deciding.
Which security tools do you use?
ThreatDown for managed detection and response, Microsoft Defender for Business and Entra ID Conditional Access in the tenant, Barracuda for email protection, Rapid7 InsightVM for vulnerability scanning, Cisco Meraki or Fortinet at the edge, Datto or Veeam for immutable backups and KnowBe4 for training. Licensing is part of the agreement.
Do you have an office in Manhattan?
Our office is at 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215. On-site work is scheduled for your address, access requirements and support scope. 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. Ongoing agreements are month to month.
How can IT support help with New York data-security requirements?
The New York SHIELD Act (General Business Law § 899-bb) requires reasonable administrative, technical and physical safeguards for covered private information. The small-business standard considers the size and complexity of the business and the sensitivity of the information; it is not a general small-business exemption. NetSys can help document the relevant systems, controls and incident evidence within an agreed scope; legal notification decisions remain with your authorized business and legal team.
How much do cybersecurity services cost in Manhattan?
We charge per user per month for the managed service and quote assessments separately, after seeing the environment. Manhattan quotes vary with the number of identities and devices, compliance evidence for law firms, advisers and funds, and whether staff sit on a co-working floor whose network you do not control, which shifts protection onto each device.
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.