Cybersecurity Services in Dallas
NetSys provides cybersecurity services to businesses in Dallas: 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. Dallas is served from Brooklyn, one hour behind us on Central time. Monitoring, help desk and remediation run remotely around the clock from Brooklyn, with coverage hours stated in Central time in the proposal. On-site commitments are arranged in advance and sized to the engagement. Most clients run between 10 and 75 seats, and every agreement is month to month.
The short answer
NetSys provides cybersecurity to businesses in Dallas: 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. Delivery is remote-first from Brooklyn, with coverage hours stated in Central time, and on-site commitments are arranged in advance and sized to the engagement, up to a dedicated engineer with a drive time generally under an hour where regular presence is part of the scope. Most clients run between 10 and 75 seats, and every agreement is month to month.
How cybersecurity is delivered in Dallas
Dallas is served from Brooklyn, one hour behind us on Central time. Monitoring, help desk and remediation run remotely around the clock from Brooklyn, with coverage hours stated in Central time in the proposal. On-site commitments outside the tri-state area are arranged in advance and sized to the engagement: a mostly remote engagement needs no dedicated on-site engineer, while an engagement that calls for regular presence, such as vCISO work with someone on site two days a week, gets a dedicated engineer whose drive time is generally under an hour, depending on where that engineer and your office are. Hardware ships pre-configured, so most projects need no visit at all. The buildings decide a lot of the design. Uptown and Las Colinas towers have carrier choice, but Plano and Frisco office parks are often single-circuit AT&T or Spectrum, and the metro's sprawl means a technician visit is a half-day, which is why shipped, pre-configured hardware and remote management carry most of the work. The carriers we see most in Dallas are AT&T Business Fiber, Spectrum Business and Frontier Fiber, and the failover design starts with which of them actually reach your building.
Who cybersecurity in Dallas is built for
Most of our Dallas work sits in Uptown, the Design District, Plano, Las Colinas and Frisco: financial and insurance firms on Salesforce Financial Services Cloud, commercial real estate firms on Yardi Voyager, medical practices on eClinicalWorks, law firms on NetDocuments, logistics and distribution companies on Manhattan Active, and professional firms on QuickBooks Online. Each carries its own compliance load, which the section below covers, and each has a line-of-business vendor we coordinate with rather than work around. Companies with an internal IT person fit too; in that case we supply the monitoring, the security stack and the after-hours coverage behind them, and they keep their projects.
What tends to go wrong in Dallas
Two things shape the continuity design here. First, the weather and the grid: the February 2021 ERCOT grid failure left offices without power for days, and spring tornado season closes buildings without warning, so UPS runtime, cellular failover and out-of-state backups are the design case. Second, the attacks that actually land locally are ordinary ones, and the public record shows how they go: the May 2023 Royal ransomware attack on the City of Dallas, which took police, courts and 311 systems offline for weeks and, by the city's own after-action report, exposed the data of more than 30,000 people. The controls in the next section are the ones that would have changed those stories.
Cybersecurity in Dallas: 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
- Written incident response plan with named owners, tested once a year on a tabletop exercise
- Post-incident reports written for your insurer and your counsel, not just your IT team
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
- Barracuda Email Protection with impersonation protection, plus DMARC enforcement for the domain
- KnowBe4 training on a recurring schedule, with a wire-transfer and vendor-change verification procedure written for finance
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
- Immutable, off-site backups with restores run on a schedule and the result written down
- Free remote external penetration test before you hire us; Tier 2 source-code testing quoted per codebase
A 40-person commercial real estate firm in Uptown
The specific engagements behind this profile are under NDA, so it is written as a generalization rather than a named client. Our published, client-approved outcomes are in case studies.
A 40-person commercial real estate firms in Uptown whose Microsoft 365 tenant was set up years ago and never hardened, running Yardi Voyager and moving money by wire every week. The cyber insurer asked for evidence of MFA and endpoint detection before renewal, and nobody has it. Nobody can say whether a mailbox was compromised or the sender was spoofed, the antivirus came bundled with the laptops, and the firewall the last provider installed has a vendor port open that nobody remembers approving.
- Standing administrator rights converted to just-in-time roles through Entra ID Privileged Identity Management, with break-glass accounts kept outside it
- 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
- Vendor questionnaire answered from the documented controls, with the evidence attached rather than promised
- Free remote external penetration test limited to information available to NetSys and the external scope agreed with the business; internal review and remediation scoped separately
- Barracuda Email Protection placed ahead of the mailboxes and SPF, DKIM and DMARC corrected so the domain can no longer be spoofed, with a callback rule adopted for any change in payment instructions
- Cisco Meraki firewall installed with intrusion prevention, geo-blocking, segmentation between finance, servers, printers and guests, and DNS filtering on every device
The insurer's questions get answered with evidence instead of assurances, wire instructions have a verification step that does not depend on memory, and an engineer is watching the tenant at night. The business gets one person to call. 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.
Compliance in Dallas: § 521.053 and what sits on top of it
If you hold personal information on a resident of Texas, Texas Business and Commerce Code § 521.053 requires notice to affected residents within 60 days of determining a breach occurred and, when 250 or more Texans are affected, notice to the Attorney General within 30 days. The Texas Data Privacy and Security Act, in force since July 1, 2024, adds data-protection assessments and consumer rights for businesses above the small-business threshold, and Texas HB 300 tightens health-information handling beyond HIPAA. Healthcare practices carry HIPAA and HB 300, energy and industrial firms answer to customer and insurer questionnaires, and defense suppliers face CMMC 2.0. 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. Most firms we take over have none of it documented, which is the part that matters if you ever have to demonstrate compliance, so the documentation is built during onboarding rather than sold as a separate project.
What cybersecurity costs in Dallas
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, whether 24/7 response is needed beyond monitoring, 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 Financial Services · IT for Real Estate & Property Management
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 all locations and service areas.
Also in Dallas: Managed IT Services · IT Consulting · IT Support
Cybersecurity elsewhere: Houston · Austin · San Antonio · New York City · Brooklyn, NY · Nassau County, NY
Related services: Penetration Testing · Cyber Insurance Readiness · Security Assessments · Managed Detection & Response (MDR)
Cybersecurity in Dallas: FAQs
Do we need a security assessment before signing up?
The free external test is where most engagements start. A fuller assessment of the tenant, devices, network and backups is scoped separately and produces a prioritized fix list that becomes the first ninety days of the service.
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 examines what your business shows the internet and reports the findings with their scope and limitations stated. Reviews of tenant settings, devices, internal networks or backups need a separate scope.
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.
Do you have an office in Dallas?
Our office is in Brooklyn, NY. Dallas is served from Brooklyn, one hour behind us on Central time. Outside the tri-state area the on-site arrangement is agreed before the engagement starts and sized to what it needs: none for a mostly remote account, and a dedicated engineer, generally within an hour's drive, where regular presence such as vCISO work with someone on site two days a week is part of the scope. The proposal states that arrangement, coverage hours in Central time and any travel in writing, and the agreement runs month to month.
What does Texas require after a data breach?
§ 521.053 gives a business 60 days from determining a breach occurred to notify affected residents, and 250 or more affected Texans means the Attorney General must be told within 30 days. Texas HB 300 adds stricter rules for health information. Logs, encryption and a written response plan are how a small business meets the deadlines.
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.