Veteran-Owned · Fairfax, VA · Serving DC, Maryland & Virginia
Reliable IT Support & Cybersecurity for Growing Businesses
Outsourced IT, security, and helpdesk that stabilize your environment, harden it against real threats, and keep documentation tight. Built for construction and trades, medical and veterinary practices, law firms, and federal contractors across the DMV.
Want a full review? Request a free assessment, book a 30-minute call, or call (571) 526-0463.
Free Download
Get the Free IT Readiness Checklist
15 plain-English questions to see whether your technology would hold up to a real threat, an auditor, or a cyber-insurance review. No jargon, no sales pitch.
Most businesses outgrow their IT setup long before they realize it. By the time something breaks, the damage is already spreading. One clicked link can hand an attacker your email, and from there your invoices, your payments, and your customers' trust. Sentry keeps your environment stable, secure, and documented before problems become emergencies.
Services
How can we help you?
Endpoint Detection & Response
Managed EDR with 24/7 threat monitoring and SOC-backed incident response on every device.
Email Security
Advanced threat protection across all mailboxes. Phishing, malware, and business email compromise defense included.
Backup Management
Monitored backup with restore validation. Your data is protected and recoverable.
Monitoring & Patch Management
Continuous monitoring of devices, servers, and network equipment. OS and third-party patching included.
M365 Administration
License management, user provisioning, security configuration, and ongoing administration of your Microsoft 365 environment.
User Onboarding & Offboarding
New hire setup and secure departures handled for you. Up to 2 per month included in base pricing.
Documentation & vCIO Advisory
Network diagrams, credential management, and strategic IT guidance. Quarterly business reviews included.
Unlimited Remote Helpdesk
No per-ticket fees. No hourly charges for remote support. Call or email as often as you need during business hours.
Client Dashboard
Real-time visibility into your IT environment. Track requests, review reports, and access documentation through your client portal.
Who we serve
Construction and Trades
IT support built for crews in the field and staff in the office. We keep job-site devices, email, and project files secure and online, defend against the invoice and wire fraud that target contractors, and answer fast so a tech issue never stalls a job.
Free Assessment
Find out where your operations stand.
We will review your current environment, identify the gaps, and tell you exactly what it would take to bring your IT operations up to a disciplined, documented standard. If something is outside our scope, we will say so directly.
Over 20 years of U.S. Army service in intelligence and security operations. MBA from the University of Virginia. Joseph brings operational discipline and documentation rigor from his military career to every client environment Sentry manages.
— Joseph Coppo, Owner