Cybersecurity · White Plains

Cybersecurity Services in White Plains, NY

For White Plains firms that hold client money, case files, tax returns or patient records and cannot afford a week offline. NetSys watches every device and sign-in, blocks the phishing and payment fraud aimed at professional offices, and sends engineers from Brooklyn to your suite when an incident or a firewall needs hands.

All IT services in White Plains, NY

The short answer

NetSys provides managed cybersecurity for White Plains businesses: ThreatDown managed detection and response on every device, Microsoft Defender for Business, multifactor authentication and Entra ID Conditional Access, Barracuda email protection, KnowBe4 phishing training, Rapid7 vulnerability scanning and immutable Datto or Veeam backups. Alerts are watched around the clock, and engineers travel to White Plains offices from our Park Slope office for firewall work and incident containment. The only free offer is a remote external penetration test within an agreed scope. Agreements run month to month.

Service information by The NetSys Group. Our editorial standards.

How cybersecurity is delivered in White Plains

Detection and response run remotely and continuously. Endpoint agents, Microsoft 365 sign-in logs, email filtering and firewall events feed the tools our engineers watch, and a compromised laptop can be cut off from the network remotely without anyone getting in a car. White Plains is about an hour north of Park Slope and inside our on-site coverage, so engineers come to the office for work that needs hands: installing or replacing a Fortinet or Meraki firewall, splitting a flat network into segments after a floor change, collecting an infected machine for imaging, or walking the suite with a managing partner before a security review. Ransomware, systems down or email down skips the queue and goes straight to 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.

The attacks aimed at White Plains offices

Firms near the courthouses and along Westchester Avenue are targeted for the money and records they handle, not for their size. Business email compromise is the most common pattern: an attacker signs in to a partner's or bookkeeper's mailbox with a stolen password, reads the thread for a real estate closing, settlement or capital call, and sends new wiring instructions the day before funds move. Tax practices see fake client portals and IRS-themed lures from January to April. Medical offices see referral and fax lures and attempts on remote EHR access. Staff who work from a Metro-North seat or home Wi-Fi bring session-token theft, where a copied browser token gets past the password entirely. The controls that stop these are specific: phishing-resistant sign-in methods, Conditional Access tied to managed devices, monitoring for new inbox rules, and a call-back step for any change to payment details.

What Westchester incidents show about recovery

Public incidents in the county make a practical planning guide. In September 2021, Yonkers City Hall staff worked without computers for about a week after a ransomware attack; officials refused to pay and rebuilt from backups. In April 2022 the Westchester Library System had to wipe and reload roughly 500 public computers across 38 libraries. Empress EMS, the Yonkers ambulance company, reported in 2022 that intruders inside its network since late May had copied files holding information on about 318,558 patients. In October 2023 an attack on WMCHealth, the hospital network based in Valhalla, forced ambulance diversions at its Kingston and Margaretville hospitals while systems came back. The county set up its own Cybersecurity Task Force in 2022. For a 20 or 50 person office the lessons are plain: a backup only counts if it is immutable or offline and someone has restored from it, and attackers often sit quietly for weeks before encrypting anything.

Controls we run, mapped to the SHIELD Act

New York's SHIELD Act (General Business Law section 899-bb) asks for reasonable administrative, technical and physical safeguards, and the Attorney General's guidance lists what those can include: a designated program coordinator, risk assessment, staff training, vetted service providers, detection of and response to attacks, regular testing and secure disposal. Our stack lines up with that list. Keeper and Entra ID handle passwords and sign-in, Conditional Access keeps unmanaged devices away from client data, ThreatDown MDR and Defender for Business detect and contain attacks, Barracuda filters mail, KnowBe4 trains and tests staff, and Rapid7 InsightVM finds missing patches, including servers still on Windows Server 2016, whose extended support ends January 12, 2027. Datto SIRIS and Veeam hold immutable backups. Every control leaves a record, so when an insurer, a client questionnaire or a regulator asks how data is protected, the answer already exists in writing.

The first 30 days of a security engagement

A White Plains engagement usually opens with the free external penetration test, run remotely against the internet-facing systems in a scope agreed with you, plus a separately scoped review of the Microsoft 365 tenant and devices. In the first two weeks we deploy ThreatDown and NinjaOne to every laptop and server, move each user to app-based multifactor sign-in with number matching, turn off legacy authentication, and publish DMARC, SPF and DKIM records so nobody can send mail as your domain. Weeks three and four bring Conditional Access, backup immutability with a timed test restore, and the first phishing simulation. Staff notice a new sign-in prompt and a ten-minute training video. Partners notice that a forged wire request now fails the call-back check. At the end you receive a written risk register and a plan for what remains, ranked by exposure rather than by vendor.

What is included

Cybersecurity in White Plains: 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

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

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

Published case study

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.

Read the full case study (5-person office)

From our client work

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 Training IT 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 White Plains client.

What cybersecurity costs in White Plains

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.

How the monthly 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.

Cybersecurity in White Plains: FAQs

Do you provide on-site cybersecurity in White Plains?

Yes. White Plains is within the area our engineers serve in person, about an hour by car from Park Slope. Monitoring and containment happen remotely first, because that is the fastest way to stop an attack. Engineers come to your office to install and configure firewalls, segment networks, collect a compromised computer for forensic imaging, and review physical security such as closet access, badge-controlled doors and guest Wi-Fi. During an incident the remote response starts immediately while a trip is arranged for any hardware that has to be touched.

How much do cybersecurity services cost in White Plains?

Cybersecurity is usually part of the per-user monthly managed IT fee, quoted after an assessment, and we do not publish prices. The figure depends on users and devices, whether servers or cloud workloads need protection, the licensing you already own (Microsoft 365 Business Premium includes Defender for Business and Conditional Access), the compliance evidence your industry requires, and whether you want vCISO time for policies and insurer reporting. Penetration testing beyond the free external test, and incident response for an organization that is not yet a client, are quoted separately.

Which cybersecurity requirements apply to businesses in White Plains?

Any business holding private information about New York residents falls under the SHIELD Act: reasonable safeguards under General Business Law section 899-bb and, under section 899-aa, notice to affected residents within 30 days of discovering a breach, with notice to the Attorney General, Department of State and State Police. DFS-licensed firms add 23 NYCRR Part 500, tax preparers the FTC Safeguards Rule, medical practices the HIPAA Security Rule, and investment advisers the SEC's amended Regulation S-P. This is general information, not legal advice.

What does the free external penetration test cover?

It is a remote test of your internet-facing systems within a scope we agree in writing: public IP addresses, firewall and VPN portals, and the mail and web services an attacker can see from outside. Engineers look for exposed services, weak or default credentials on remote access, missing patches and risky configurations, then report what was tested, what was found and how to fix it. Internal network testing, a Microsoft 365 configuration review and any visit to your office fall outside it and are scoped separately.

What happens if our White Plains office is hit by ransomware?

Call the main line or your dedicated engineer; ransomware never waits in the help desk queue. Engineers isolate affected devices through ThreatDown, cut the attacker off by resetting credentials and revoking sessions, preserve evidence for your insurer and counsel, and decide with you whether to restore or rebuild. Someone comes to the office if machines must be pulled. In the past three years NetSys has worked more than 30 ransomware cases to full recovery, and clients that already had a disaster recovery plan were running again within 24 hours.

Start with the free test

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.

Explore Cybersecurity Scope 845-203-3914