Cyber Security Nassau County for Medical, Legal and Accounting Practices
NetSys provides cybersecurity services in Nassau County, NY: managed detection and response, Microsoft 365 identity and email protection, staff training and tested backups. Our Brooklyn team scopes the systems, response responsibilities and on-site work you need, with month-to-month terms.
The short answer
NetSys provides managed cybersecurity to businesses throughout Nassau County: 24/7 monitoring with real alerting, managed detection and response on every workstation and server, multifactor authentication and Conditional Access across Microsoft 365, email and phishing protection, security awareness training, privileged access and privileged identity management, and immutable backups with restores we test rather than assume. The free offer is a remote external penetration test, limited to the information available to NetSys and the external scope agreed with you. Nassau County sits inside the Long Island region our engineers cover on-site, so visits for network work, incident response and discovery are normal scheduling. Our office is at 1 Prospect Park SW in Brooklyn. Agreements are month to month.
Service information by The NetSys Group. Our editorial standards.
What cybersecurity in Nassau County has to defend
Practices here hold the kind of data that sells: patient records under HIPAA, client tax returns and Social Security numbers under the FTC Safeguards Rule, escrow and settlement funds in law firm trust accounts. A dental group with four offices might run its practice-management system on workstations where the front desk shares one login. An accounting firm gets hit with fake client emails every tax season. Attackers do not need anything sophisticated against that: a phished Microsoft 365 password, a forged invoice, or a remote access tool left open for a software vendor will do. Insurers have noticed. Renewals across the county now hinge on multifactor authentication, endpoint detection and offline backups, and a practice that cannot show them pays more or gets declined. The SHIELD Act applies on top of all of it.
How NetSys delivers cybersecurity across Nassau County
Monitoring, detection and response run remotely around the clock, which is where most of the work happens. On-site visits come from Brooklyn, which puts Nassau inside a routine drive: firewall installation, connecting several offices into one managed network, pulling an infected machine off the wire, the discovery session that opens the relationship. Multi-site practices are the normal shape on Long Island, so we design identity, network and backup once and apply it to every location instead of improvising it four times. The free offer is a remote external penetration test, limited to the information available to NetSys and the external scope agreed with you. Findings describe that scope and its limitations. Reviews of Microsoft 365 tenant settings, devices, internal networks, backups or compliance evidence require a separate scope. From there we take over the monitoring and the security stack under month-to-month terms, and your account manager gives you a real cell number rather than a queue.
Who this fits in Nassau County
Medical and dental groups, law firms, accounting and tax practices, insurance agencies answering to NYDFS, and family-owned businesses with a Microsoft 365 tenant nobody has reviewed since it was created. The practices that benefit most have regulated data, several locations or an insurer asking pointed questions, and no security staff of their own. A practice with an office manager who doubles as IT fits well as a co-managed arrangement: they keep the vendor relationships, we take the monitoring, the security controls and the after-hours escalation. If a renewal is coming up or an auditor has asked for a written program, the external test and the tenant review give you an honest starting point within days.
Cybersecurity in Nassau County, NY: what NetSys delivers
Monitoring and response
- 24/7 monitoring of endpoints, Microsoft 365 sign-ins, email flow and network logs
- Managed detection and response on every workstation and server at every location
- Real-time isolation of a compromised device and investigation of how it happened
- A written incident record suitable for HIPAA, Safeguards Rule and insurer reporting
Identity and privileged access
- Multifactor authentication and Conditional Access across every account
- Shared front-desk and billing logins replaced with attributable individual accounts
- Privileged access management for practice-management and server administrators
- Privileged identity management so vendor and admin rights expire when the work is done
- Quarterly access reviews so departed staff and old vendors lose access on schedule
Email and awareness
- Phishing and malware protection ahead of every mailbox
- SPF, DKIM and DMARC configured to reduce unauthorized use of your domain, with alignment checks, reporting and staged enforcement
- Security awareness training with tax-season and patient-portal phishing simulations
- Payment and vendor-change verification procedures for billing staff
Backups and testing
- Immutable backups for servers, practice-management data and Microsoft 365
- Restores tested on a schedule, documented, and measured against your recovery-time objective
- Free remote external penetration test limited to available information and agreed external scope; findings state the scope and limitations
- Tier 2 source code testing for practices that run custom software, quoted per codebase
A Nassau County accounting firm heading into tax season
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.
Three partners and a seasonal staff that doubles every spring, a client portal, and a Microsoft 365 tenant where multifactor authentication was turned on for the partners and nobody else. Seasonal preparers log in from home on personal machines. The firm's insurer has flagged the FTC Safeguards Rule and asked for a written information security program, and a client just forwarded an email that looked like it came from the firm asking for a copy of a driver's license.
- Free remote external penetration test limited to information available to NetSys and the external scope agreed with the business; any internal investigation or remediation below is scoped separately
- Multifactor authentication and Conditional Access applied to every account, with seasonal preparers moved onto managed devices or controlled remote sessions instead of personal laptops
- Managed detection and response deployed across the workstations and the server that holds tax software
- Phishing protection in front of the mailboxes, email authentication aligned with staged DMARC enforcement to reduce unauthorized use of the domain, and awareness training timed before the season starts
- Immutable backups with a tested restore, and a written information security program that describes the controls now in place for the Safeguards Rule
The firm enters tax season with every login protected, seasonal staff working from devices the firm controls, and a written program it can show its insurer. Domain authentication reduces unauthorized use of the domain, while payment-change verification addresses impersonation attempts that email controls cannot prevent. Coverage runs 24/7 through the season and the agreement stays month to month.
Firewall, antivirus and maintenance for a five-person office
A five-person office needed the basics done properly rather than an enterprise stack. NetSys replaced the internet provider's router with a business-grade firewall configured with sensible rules, secure remote access and logging, deployed managed antivirus on every machine with updates and alerts handled centrally, and put patching, backup checks and health reviews on a schedule. The agreement covers what the office needs and nothing it does not, month to month. No outcome figures were measured for publication.
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
- Wealth management
RIA firm
Barracuda email protection for 117 licensed users, email archiving, cybersecurity monitoring, and account access management.
Cybersecurity for Financial ServicesIT for RIAs and Wealth Management
- Healthcare
Home healthcare agency
Mobile device protection for 73 phones and tablets, secure email access, and remote removal of company data from lost devices.
Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Nassau County, NY client.
Compliance in Nassau County: 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 Nassau County
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 Healthcare
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 Nassau County, NY.
Also in Nassau County, NY: Network Security & Monitoring · Backup & Disaster Recovery
Cybersecurity elsewhere: New York City · Brooklyn, NY · Suffolk County, NY · Westchester County, NY · Stamford, CT · Manhattan
Related services: Disaster Recovery · Managed IT Services · Penetration Testing · Cyber Insurance Readiness
Cybersecurity in Nassau County, NY: FAQs
What does the free external penetration test include?
The free offer is a remote external penetration test, limited to the information available to NetSys and the external scope agreed with you. It is not an on-site visit or a full internal audit. Reviews of Microsoft 365 tenant settings, devices, internal networks, backups or compliance evidence require a separate scope. The findings state what was assessed and the limits of that assessment.
Who provides cybersecurity services in Nassau County?
The NetSys Group provides managed cybersecurity to businesses across Nassau County from its Brooklyn headquarters, with engineers traveling to Long Island for on-site work. The service covers 24/7 monitoring, managed detection and response on every device, multifactor authentication and Conditional Access, phishing protection, security awareness training, privileged access management and immutable backups with tested restores. The engagement opens with a free remote external penetration test, and every agreement runs month to month. NetSys has been in business since 1998.
Do you provide cybersecurity on Long Island, or only in the city?
Both. Nassau County falls inside the Long Island area our engineers cover on-site, so visits for network work, incident response and discovery sessions are ordinary scheduling. Our office is in Brooklyn, and the county is part of the territory we already drive. Monitoring and response run remotely around the clock in between visits.
What cybersecurity does a Nassau County medical practice need for HIPAA?
HIPAA's Security Rule expects a risk analysis, access controls, audit logging, integrity and transmission safeguards, and a contingency plan. In practice that means individual logins with multifactor authentication instead of a shared front-desk account, endpoint detection on every workstation that touches patient records, encrypted and immutable backups with a tested restore, and documentation of who can reach what. NetSys builds those controls and writes them down in a form that supports the risk analysis and the insurer's questionnaire.
Our cyber insurance renewal asks for MFA, EDR and offline backups. Can you get us there?
Yes, and usually quickly, because those three controls are the core of the stack rather than special requests. Multifactor authentication and Conditional Access go across the tenant, managed detection and response goes onto every device, and immutable backups replace whatever appliance is sitting next to the server. We then document each control in the language the application uses, so the answers are true and provable. Our cyber insurance readiness service handles the renewal itself.
How much does cybersecurity cost for a small business in Nassau County?
It depends on the number of users, the servers and cloud services involved, how many locations need connecting, and what already exists versus what has to be built. NetSys quotes per business rather than from a menu, and cybersecurity is included in a managed agreement instead of sold as an upgrade. Because the agreement is month to month, there is no long-term commitment to price in. The free remote external penetration test has an agreed external scope; broader assessments and any remediation are scoped separately.
Can you secure a practice with several offices across Nassau County?
Yes, and on Long Island it is the usual shape of the work. We connect the locations over encrypted site-to-site networking so they behave as one managed environment with one set of permissions, then apply identity, endpoint and backup controls uniformly instead of office by office. Staff stop emailing records between sites because nothing else connects them, and an incident at one location can be contained without touching the others.
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.