Modern server room with structured cabling
Business & Residential IT

Engineered IT, networks, and security — delivered right the first time.

From the server rack to the security camera, D3 IT Tech designs, installs, and supports the technology your business depends on — backed by decades of field experience and a single point of accountability.

Licensed & insured Same-week scheduling Commercial & residential Serving Long Island since 2000
New — Network Security Assessments & Penetration Testing

Find out if your network can be broken into — before someone else does.

We place a small, secure testing device on your network and check it the way an attacker would. Every computer, phone, camera, and printer gets mapped. Weak passwords, outdated systems, and open doors get tested — and anything we actually get into is marked VERIFIED in a plain-English report that ranks what to fix first.

A recent dealership test: 169 devices across 5 networks — 280 findings, 48 verified.

  • Required by law for many businesses — FTC Safeguards Rule for auto dealers, HIPAA for medical and dental practices
  • Cyber insurers now ask for documented security testing on applications and renewals
  • No obligation to hire us for the fixes — the report is yours either way
What we do

A single, accountable partner for every layer of your technology

From the cabling in the walls to the applications in the cloud, D3 IT Tech delivers the full technology stack — eliminating finger-pointing between vendors and giving you one team to call.

Managed IT Support

On-site and remote support with proactive monitoring, patching, and documented response SLAs.

Server Infrastructure

Design, deployment, and migration of Windows and Linux servers, virtualization, and backup systems.

Workstation Deployment

Standardized PC and Mac provisioning, imaging, and lifecycle management for teams of any size.

Network Engineering

Enterprise switching, routing, VLAN segmentation, and firewall configuration built for reliability.

Wi-Fi Solutions

Site-surveyed wireless networks with seamless roaming and full-coverage throughput, indoors and out.

Structured Cabling

Certified Cat6, Cat6a, and fiber installations with labeled drops, patch panels, and rack buildouts.

IP Security Cameras

High-resolution surveillance systems with secure remote access, NVR storage, and analytics.

Web & App Development

Custom websites, web applications, and mobile apps engineered to scale with your business.

Cybersecurity

Next-gen firewalls, secure VPN access, encrypted backups, and layered ransomware protection.

Security Assessments

Network vulnerability scans with a plain-English report — the security checkup insurers now expect.

Penetration Testing

Authorized hands-on testing that proves which weaknesses an attacker can actually reach.

Security

Network Security Assessments

A point-in-time health check of your network: we scan for the weaknesses attackers and auditors look for first, and tell you exactly what to fix, in plain English.

What you get

A plain-English written report ranking every finding — fix now, schedule, or fine as-is. No jargon, and no obligation to hire us for the fixes.

Why it matters

Cyber-insurance applications increasingly require documented vulnerability scans, and some industries must complete security testing every year. An annual assessment keeps you covered — and catches problems while they are still cheap to fix. Reports support HIPAA security risk analysis for medical and dental practices and FTC Safeguards Rule requirements for auto dealers.

Request an assessment

What we check

  • Exposed services and open ports reachable from the internet — and from inside the office.
  • Outdated or unpatched systems still running on your network.
  • Legacy protocols such as SMBv1 that should be retired.
  • Wi-Fi security configuration: encryption, guest separation, and shared passwords.
Security

Penetration Testing

A scan finds the holes. A penetration test proves which ones an attacker can actually use. With your signed authorization, we actively test default passwords on routers, cameras, printers and servers, anonymous and guest access, SNMP defaults, and encryption weaknesses — carefully and non-disruptively (no denial-of-service techniques, login attempts strictly capped). Anything we actually get into is marked VERIFIED in your report.

Compliance

Reports support HIPAA security risk analysis for medical and dental practices and FTC Safeguards Rule requirements for auto dealers.

Request a penetration test

How we work

  • Verified findings, not just warnings
  • Signed authorization and agreed scope before testing
  • Dedicated Penetration Test section in your report

Quarterly Security Program

Ongoing proof instead of a one-time snapshot: quarterly security assessments, an annual penetration-test run, and retests after fixes — with a fresh report every quarter. No long-term contract.

Ask about the program
Why D3 IT Tech

Built on trust. Executed with precision.

Whether it's a single workstation refresh or a complete office buildout, every project is held to the same standard: clean execution, thorough documentation, and long-term reliability.

Local and responsive

A real engineer answers the phone, and we arrive on the day and time we commit to.

Full-stack expertise

Servers, networks, cabling, surveillance, and software — delivered by one team, on one invoice.

Professional installation

Cleanly dressed cabling, fully labeled drops, and clear as-built documentation for every project.

Long-term partnership

We learn your environment, document it thoroughly, and grow with you — not a ticket factory. Most of our clients have been with us for over 10 years.

Who we serve

Industries we serve

OfficesRetail storesMedicalWarehousesRestaurantsSchoolsHomes & estatesConstruction sitesAuto dealerships & shopsChurchesLaw offices

Ready to upgrade your technology?

Request an appointment and a member of our team will follow up to confirm a time that works for you.