Arlington, VA · Managed IT, Security & Communications

Managed IT & Cybersecurity Services in Northern Virginia

intSignal is the senior-led IT, security, and communications partner for Arlington and Northern Virginia — from government and defense contractors to cloud and SaaS firms selling into the federal market. One accountable team for your helpdesk, cloud, compliance, and business phones.

24×7×365

SOC & NOC monitoring and response — analyst-staffed, not just alerting

3 regions

Geo-redundant hosting on enterprise infrastructure we operate

CMMC-ready

Aligned to CMMC 2.0, NIST 800-171 & FedRAMP for federal work

Arlington, Virginia

Built for how Northern Virginia actually runs

Northern Virginia is the federal-contracting capital of the country. Arlington alone holds the Pentagon and Amazon's HQ2, and the ring of Reston, Herndon, Tysons, and Chantilly is packed with defense, intelligence, and civilian-agency contractors, systems integrators, and the cybersecurity firms that serve them. Loudoun County's "Data Center Alley" carries a huge share of the world's internet traffic, and the US-East cloud region sits right in your backyard.

That world lives and dies by frameworks — CMMC 2.0 and NIST 800-171 for the defense supply chain, FISMA and NIST 800-53 for agency work, FedRAMP for cloud providers selling to government, and ITAR for controlled data. Most local IT shops can run a help desk; far fewer can carry the compliance weight. intSignal runs managed IT, a 24×7 security operation, cloud, and business communications under one roof, and produces the evidence assessors and contracting officers expect.

We support businesses across Arlington, Fairfax, and Loudoun counties and the wider DC metro — Reston, Tysons, McLean, Alexandria, Ashburn, and beyond. Senior engineers own your account, and because we operate our own geo-redundant infrastructure across three regions, we can place workloads where performance, cost, and compliance line up — and keep your recovery copy deliberately outside the crowded US-East region.

Northern Virginia industries we serve

The region's work carries some of the strictest obligations in the country. We lead every engagement with the framework that governs yours.

Why Northern Virginia businesses choose intSignal

One accountable vendor

Instead of juggling a helpdesk, a security firm, a cloud reseller, and a phone company, one team owns it all. When something breaks, there's one number to call and one team responsible — with real stake in keeping your business.

Senior-led, compliance-fluent

Real engineers own your account — people who speak CMMC, FISMA, and FedRAMP, not a tiered call center reading a runbook. You get the evidence and answers assessors and contracting officers actually ask for.

Our own infrastructure, three regions

We run geo-redundant enterprise hosting across three regions, so we can place each workload where performance, cost, and compliance line up — public, private, or hybrid — instead of forcing everything into one cloud.

In the region that runs the cloud

Remote-first for speed, with local technicians across Northern Virginia — and DR placed deliberately outside the crowded US-East region, so one regional outage doesn't take you down with it.

One team for IT, security, cloud & phones in Arlington

Tell us your stack and priorities — we return scope, ownership, and a plan, at no cost.

Managed IT services in Arlington

A complete outsourced IT department for Arlington businesses — or a co-managed extension of the team you already have.

Cybersecurity services in Arlington

A 24×7 security operation and the compliance work Arlington's regulated industries actually need — run by senior analysts, not an alert forwarder.

Managed SOC24/7 detection and response — run by our SOC, co-managed, or alongside your MSSP.MDR / XDRManaged detection and response across endpoint, identity, network, and cloud.SIEMCentralized security monitoring, correlation, and incident response.vCISOSenior security leadership on demand — strategy, risk, and board reporting.Penetration TestingManual pen testing and red teaming across network, app, cloud, and people.Vulnerability ManagementContinuous scanning, risk-based prioritization, and remediation tracking.Zero TrustContinuous verification, least-privilege access, and micro-segmentation.Email SecurityAdvanced protection against phishing, BEC, and email-borne threats.Security Awareness TrainingContinuous training and realistic phishing simulation for your staff.Incident ResponseRapid containment, forensics, and recovery — available on retainer.Security & ComplianceSOC 2, HIPAA, PCI, CMMC, ISO 27001 — controls, evidence, and audit support.Compliance WorkspaceRun a free SOC 2, ISO 27001, or HIPAA program — readiness scoring, an encrypted evidence vault, and an auditor-ready pack.Data Loss PreventionKeep sensitive data from leaving your environment.Privileged Access ManagementVaulting, just-in-time access, and session control for privileged accounts.Attack Surface ManagementExternal exposure discovery plus dark-web and brand-risk monitoring.SASE / SSEConverged network and security at the edge — ZTNA, SWG, CASB, and DLP.Cloud SecurityProtect data and applications across your cloud environments.ICS / OT SecuritySecure industrial control systems and segment plant-floor networks from IT.

How we start in Arlington

A short, low-risk path from first call to a running, monitored environment.

1

Assessment

We map your Northern Virginia environment against the frameworks your contracts require — CMMC 2.0, NIST 800-171, FISMA, FedRAMP — and where CUI actually lives, at no cost.

2

Plan & scope

A clear roadmap prioritized by what your contracts and auditors demand, including the System Security Plan and POA&M that federal work requires.

3

Onboard

We secure and stabilize first — identity, access control, backups, endpoints, and continuous monitoring — and stand up the evidence assessors expect.

4

Run & improve

24×7 operations, a named team, and reviews that keep you continuously audit-ready for the next assessment.

Areas we serve across Northern Virginia

On-site support across Arlington, Fairfax, and Loudoun counties — the wider Northern Virginia / DC metro, including the contractor and tech corridors.

Arlington
Reston
Herndon
Tysons
McLean
Alexandria
Fairfax
Ashburn
Falls Church
Vienna
Chantilly
Springfield
Sterling
Leesburg
Dulles

Arlington IT & security — frequently asked questions

Do you provide on-site IT support in Arlington and Northern Virginia?

Yes. We're remote-first for speed, but we dispatch engineers across Arlington, Fairfax, and Loudoun counties — Reston, Herndon, Tysons, McLean, Alexandria, and Ashburn — for hands-on work like installs, cabling, hardware, and new-office builds.

Can you help our company meet CMMC 2.0 and NIST 800-171?

Yes — it's our most-requested Northern Virginia engagement. We assess against NIST 800-171, close the gaps, build your System Security Plan and POA&M, protect CUI, and run the ongoing monitoring assessors expect for CMMC 2.0 and DFARS.

Do you support FedRAMP for cloud and SaaS providers?

Yes. For firms selling into the federal market, we support the FedRAMP journey — mapping and implementing the controls, producing the documentation, and running the continuous monitoring the program requires.

Can you keep our data — including CUI — in the US?

Yes. For regulated and controlled work we keep data in the US and give you documentation of exactly where it lives. We can place workloads near Data Center Alley for low latency, or deliberately elsewhere for resilience.

Can you replace our phone system with a cloud (UCaaS) solution with a local Northern Virginia number?

Yes. Our UCaaS platform is a full cloud phone system — calls, business texting, video meetings, a contact center, and business cellular — with AI transcription and IVR. We provision local 703 and 571 numbers, port your existing lines, and you can keep desk phones, go fully mobile, or both.

What size organizations do you work with in Northern Virginia?

From small contractors and firms — roughly 20 to 500 staff — to their compliance-heavy suppliers, plus multi-site and growing companies. Our security operation and cloud scale up cleanly as you win work and add people.

Managed IT & security for Arlington, VA

Serving Arlington and Arlington County. Talk to a senior engineer, not a call center.