Cybersecurity Services in Washington, DC
District organizations hold what attackers want: policy positions, member and donor lists, contract data and the inboxes of people who talk to Congress and federal agencies every day. NetSys protects them with managed detection and response, hardened Microsoft 365 identities, email filtering and backups an intruder cannot delete, all operated remotely from our Brooklyn office.
The short answer
NetSys provides managed cybersecurity for Washington, DC organizations: ThreatDown managed detection and response and Microsoft Defender for Business on every computer, Conditional Access in Entra ID with phishing-resistant sign-in, Barracuda mail filtering, KnowBe4 training, Rapid7 vulnerability scans and immutable Datto or Veeam backups. Everything is deployed and run remotely and through the cloud; NetSys does not send engineers on site in the District. Alerts are watched 24/7, and contractors get the NIST SP 800-171 evidence their primes ask for. Pricing is per user per month after an assessment.
Service information by The NetSys Group. Our editorial standards.
How cybersecurity is delivered in Washington, DC
Every control on a District engagement is installed and operated over the network from Brooklyn. In the first week, engineers push the ThreatDown agent through NinjaOne, connect Defender for Business, move Microsoft 365 sign-in behind Conditional Access and route the domain's mail through Barracuda. Nothing waits on a technician, because NetSys does not send engineers on site in DC. When a device is compromised, the engineer isolates it from the console, revokes the user's sessions and resets credentials, and a replacement laptop ships already enrolled in Windows Autopilot. A firewall swap is prepared the same way: the unit arrives with its policy loaded, and your office manager or building contractor plugs it in while we watch it come up. 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.
Why policy shops, NGOs and contractors are targeted first
In February 2025 Microsoft described Storm-2372, a Russia-aligned actor that had been phishing government, NGO, defense, IT services, health and higher education targets since August 2024. Its operators posed as prominent contacts, invited targets to a meeting over Teams, WhatsApp or Signal, then asked them to type a device code into a genuine Microsoft sign-in page, which handed over a working session without any stolen password. That is a District problem: think tanks, associations, law and lobbying firms and federal subcontractors are staffed by people who accept meeting invitations from strangers for a living. Our baseline answers it directly. Conditional Access blocks device code sign-in unless a specific device needs it, executives and finance staff move to FIDO2 security keys or passkeys, risky sign-ins force reauthentication, and KnowBe4 simulations include meeting-invite lures, not only fake invoices.
What three District breaches teach about controls
The District's own incidents point at three different failures. In March 2023, DC Health Link found that personal data on 56,415 customers, including Social Security numbers, had been taken, with members of Congress among those affected; its executive director told Congress the cause was human error. In 2021 the Babuk ransomware group published Metropolitan Police Department personnel files after ransom talks broke down. In October 2023 the Board of Elections learned that a database server at its website hosting vendor had held a copy of the voter roll. A misconfiguration, a ransomware crew and a third party: each maps to something we run. Rapid7 InsightVM scans and Microsoft Secure Score reviews catch exposed services and loose sharing settings, ThreatDown watches for the staging behavior that comes before encryption, and a vendor register records which outside companies hold your data and what their contracts say about security.
What we put in place, and what each control stops
The tools are the ones NetSys runs for every managed client, configured for how District teams work. ThreatDown MDR watches Windows and Mac endpoints 24/7 and stops suspicious processes, with Defender for Business adding Microsoft's telemetry. Entra ID Conditional Access blocks legacy authentication and refuses sign-ins from unmanaged devices. Barracuda filters inbound mail, and DMARC, SPF and DKIM reduce spoofing of your domain, which matters when donors, members and agencies trust your name on an email. Keeper vaults replace shared password spreadsheets, and KnowBe4 runs training every month. Datto SIRIS or Veeam keeps immutable backups that an intruder holding administrator rights still cannot erase. NetSys has handled more than 30 ransomware incidents in the past three years and fully recovered every one; organizations that had a disaster recovery plan in place were working again within 24 hours.
Security rules District organizations answer to
Since June 2020, D.C. Code § 28-3852.01 has required anyone holding District residents' personal information to keep reasonable security safeguards suited to the data and the size of the operation, to bind service providers to the same standard in writing, and to destroy old records and devices safely. Personal information there includes an email login with its password, so a phished mailbox can start the notice analysis under § 28-3852. Federal work adds layers: FAR 52.204-21 lists 15 basic safeguarding requirements for federal contract information, and defense subcontractors holding controlled unclassified information work under DFARS 252.204-7012 and Revision 2 of NIST SP 800-171. CMMC Phase 2, the third-party Level 2 certification due to begin November 10, 2026, was suspended on July 13, 2026, while self-assessments, SPRS scores and affirmations stay in force. Medical practices add the HIPAA Security Rule. This is general information, not legal advice.
Cybersecurity in Washington DC: 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
Law office: layered security on Microsoft 365 with cloud-to-cloud backup
A 25-attorney firm needed client confidences protected better than a closet server could manage. Alongside a Microsoft 365 migration, NetSys layered anti-phishing and email threat protection, DNS filtering, multifactor authentication on every account and endpoint protection across attorney devices in the office and remote, and established independent cloud-to-cloud backup of the entire tenant because the recycle bin is not a backup strategy for privileged material. The firm reported 82% fewer IT support incidents per month within two quarters.
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 TrainingIT 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 Washington DC client.
What cybersecurity costs in Washington DC
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.
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.
Read next
Industry pages: IT for Government Contractors · IT for Nonprofits
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 everything NetSys delivers in Washington, DC.
Also in Washington DC: Managed IT Services · IT Consulting
Industry pages for Washington DC: IT Support for Architecture and Engineering Firms in Washington, DC · IT Support for Professional Services Firms in Washington, DC
Cybersecurity elsewhere: Maryland · Virginia · Baltimore · New York City · Brooklyn, NY · Nassau County, NY
Related services: Penetration Testing · Cyber Insurance Readiness · Security Assessments · Managed Detection & Response (MDR)
Cybersecurity in Washington DC: FAQs
How does cybersecurity work for Washington, DC organizations?
Remotely, from day one. We begin with a review of Microsoft 365 sign-in logs, admin roles, mailbox forwarding rules and internet-facing services, then deploy agents and policies in stages so nobody is locked out on a deadline. ThreatDown alerts are triaged 24/7. For ransomware or a compromised account, your dedicated engineer is on the phone within ten minutes and working remotely within thirty. NetSys does not send engineers on site in DC, so isolation, cleanup and restores all happen over the network, and replacement hardware ships preconfigured.
How much do cybersecurity services cost in Washington, DC?
Security is priced per user per month from an assessment, and inside a managed IT agreement it is already included rather than sold on top. What moves the number for a District organization: how many devices and servers need agents, whether you need a Microsoft 365 GCC High tenant or a separate enclave for controlled information, how much documentation a prime, funder or insurer expects, and whether staff need hardware security keys. Penetration testing beyond the free external test, response to a breach already under way and remediation projects are quoted after scoping.
Which cybersecurity requirements apply to businesses in Washington, DC?
Most District organizations start with two sections of the D.C. Code. Section 28-3852.01 requires reasonable safeguards and written security terms with vendors. Section 28-3852 requires notice to affected residents in the most expedient time possible and, when 50 or more District residents are affected, written notice to the Attorney General no later than the residents get theirs. Contractors add FAR 52.204-21, or the DFARS 7012 clause and NIST SP 800-171 for defense work. Practices add HIPAA, and tax preparers the FTC Safeguards Rule. Staff living in Maryland or Virginia can bring those states' breach laws in as well.
What should a DC office do in the first hours after a suspected breach?
Call the help desk or your dedicated engineer before anyone wipes a laptop or deletes a mail rule. We isolate affected devices through ThreatDown, revoke sessions in Entra ID, preserve sign-in and endpoint logs and confirm the backups are intact. Your counsel decides on notice. The District's statute expects the Attorney General's notice to describe what was taken, how many District residents are affected, the cause if known and the remediation, with a sample resident letter, so the timeline we keep becomes the record those letters rest on. Defense contractors also owe the DoD a report within 72 hours.
What does the free external penetration test cover?
We probe, from outside and within a scope agreed in writing, what your organization exposes to the internet: public IP addresses, VPN and remote-access portals, web logins and mail services. The report lists each finding with its severity and the fix, and it is often the quickest way for a DC association or contractor to see what an outside attacker sees first. It does not cover internal networks, Wi-Fi or staff behavior; those need a scoped engagement, and phishing simulations run through KnowBe4 under a managed agreement.
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.