Cybersecurity Services in Baltimore, MD
Baltimore has seen ransomware at City Hall and in two school systems, and an impostor who diverted about $1.5 million in city payments by posing as a vendor. NetSys defends Baltimore firms against those attacks remotely from Brooklyn: an engineer watches every endpoint, Microsoft 365 sign-ins need a second factor, mail is screened before delivery and one backup copy sits beyond ransomware's reach.
The short answer
NetSys provides cybersecurity services to Baltimore businesses. Each computer and server runs ThreatDown managed detection and response; Microsoft 365 is locked down with multifactor authentication and Entra ID Conditional Access; Barracuda screens email; Rapid7 scans for vulnerabilities; KnowBe4 trains staff to spot phishing; and immutable backups get scheduled test restores. All of it is run from our Brooklyn office over the network, and no NetSys engineer comes on site in Baltimore. Threat monitoring and emergency response run continuously, engineers staff the help desk from 4 a.m. to 11 p.m. Eastern every day, and pricing is per user per month after an assessment.
Service information by The NetSys Group. Our editorial standards.
How cybersecurity is delivered in Baltimore
Nothing on this page needs a technician in your building: every control is installed and operated over the network. NinjaOne pushes the ThreatDown agent to each computer and server, Conditional Access policies are written into your Microsoft 365 tenant, and Barracuda filters mail before it reaches a mailbox, so protection starts the week you sign rather than when someone can get to Baltimore. When an alert fires, an engineer in Brooklyn isolates the device, ends the attacker's sessions and resets the account from the console, often before the user notices anything. NetSys has no engineers working on site in Baltimore. If a firewall needs replacing, it ships configured for your circuit; someone from your office or your cabling contractor connects it, and our engineer activates it remotely and checks each rule against the design. 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.
What Baltimore's public ransomware cases teach a private firm
Baltimore's public bodies have published unusually detailed accounts of what an attack costs. The city's budget office put the May 2019 RobbinHood ransomware attack at $18.2 million, counting recovery work and revenue lost while systems were down, and the city refused to pay. Baltimore County Public Schools were hit in November 2020; Maryland's Inspector General for Education later put the cost above $9.6 million and traced the entry to an emailed attachment opened through an unsecured school-system account. On February 13, 2025, ransomware reached Baltimore City Public Schools and exposed personal data for about 55 percent of employees, and the district says no ransom was paid. For a 20-person firm the lessons are the same: multifactor sign-in everywhere, attachments checked before delivery, endpoint detection that stops encryption mid-run, and a backup copy the attacker cannot touch.
Vendor payment fraud and the city's $1.5 million loss
Not every Baltimore loss involved encryption. In 2025 the city's Inspector General reported that an impostor used a real employee's name to gain access to a contractor's supplier account, changed its bank details and collected two payments of roughly $803,000 and $721,000. The city got the $721,000 back; the larger payment was still unrecovered, and the report noted that vendor scams in 2019 and 2022 had not produced fixes. Private firms lose money the same way, usually through a spoofed or hijacked email asking accounts payable to update remittance details. The controls are mostly procedure and identity: a phone call to a number you already had on record before any bank change, multifactor sign-in on every finance mailbox, Barracuda impersonation filtering, DMARC records that make your domain harder to spoof, and an alert the moment someone adds a hidden inbox rule.
Security reviews from hospitals, universities and defense primes
Johns Hopkins alone reported 41,833 employees working in Baltimore City in fiscal 2024, and the University of Maryland Medical System, MedStar and LifeBridge employ thousands more. The billing companies, specialty practices, research suppliers and software vendors around them receive security questionnaires before each renewal, and a HIPAA business associate agreement puts the duty in writing. Between Baltimore and Washington, Fort Meade houses the National Security Agency and U.S. Cyber Command, and contractors near it and along the BWI corridor work under DFARS 252.204-7012, which points them to NIST SP 800-171. The Department of War paused CMMC Phase 2, the third-party Level 2 certificate, on July 13, 2026; contractors must still file Level 1 or Level 2 self-assessments and keep an SPRS score current. What we produce for these reviews: multifactor and Conditional Access reports, EDR coverage, scan results, restore logs and a tested incident plan.
The first 30 days of a Baltimore security engagement
The first five days are discovery. We run a Rapid7 scan inside and outside the network, read your Microsoft 365 sign-in and mailbox settings, list every admin account, and check whether the credentials that run the office could also delete your backups. Within two weeks you hold a findings list in priority order with a cost beside each item. Remediation follows in a window you approve: ThreatDown replaces whatever antivirus was there, a second sign-in factor becomes compulsory, Conditional Access blocks sign-ins from countries your staff never work in, Keeper retires the shared password sheet and a restore is tested and written up. Staff see an approval request on their phone when they sign in, plus a brief KnowBe4 module. Near day thirty your account manager walks through the first security report: alerts handled, devices covered, risky accounts and what remains open.
Cybersecurity in Baltimore: 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
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
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
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.
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 Baltimore client.
What cybersecurity costs in Baltimore
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 Healthcare · IT for Government Contractors
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 Baltimore, MD.
Also in Baltimore: IT Support · IT Consulting · Managed IT Services
Cybersecurity elsewhere: Maryland · Virginia · Washington DC · New York City · Brooklyn, NY · Nassau County, NY
Related services: Penetration Testing · Cyber Insurance Readiness · Security Assessments · Managed Detection & Response (MDR)
Cybersecurity in Baltimore: FAQs
How does cybersecurity work for Baltimore organizations?
Entirely over the network. Agents on your devices report to the ThreatDown and NinjaOne consoles, sign-in rules sit in your Microsoft 365 tenant, and Barracuda inspects mail before anyone opens it. An engineer reviews and acts on each alert, around the clock, instead of forwarding it to you. For everyday requests your team calls, emails or messages us in Teams between 4 a.m. and 11 p.m. Eastern, any day, and a ransomware alert or a hijacked mailbox is passed straight to your dedicated engineer. NetSys has no engineers on site in Baltimore, so any replacement hardware leaves us configured and is connected by your staff or cabling contractor.
How much do cybersecurity services cost in Baltimore?
Security is charged per user each month, either within a managed agreement or as a separate security service, and the number is set by an assessment, not a rate card. For a Baltimore firm the drivers are the number of computers and servers, whether you hold patient, student or controlled defense information, how many Microsoft 365 tenants and domains you run, and the evidence a hospital customer, prime contractor or insurer wants back. A HIPAA risk analysis or an incident response plan is quoted as a project. Agreements run month to month, and a remote external penetration test, scoped with you, is the single thing we give away.
Which cybersecurity requirements apply to businesses in Baltimore, MD?
Two Maryland laws come first. The Personal Information Protection Act (Commercial Law 14-3504) calls for a prompt, good-faith investigation, a notice to the Attorney General ahead of any notice to residents, and resident letters no more than 45 days after the breach comes to light unless misuse is unlikely; a decision not to notify must be documented and kept three years. Maryland's Online Data Privacy Act, in force from October 1, 2025 and applied to processing from April 1, 2026, reaches firms handling data on 35,000 Maryland consumers (10,000 if data sales bring in over a fifth of revenue) and forbids selling sensitive data. HIPAA and DFARS sit on top. This is general information, not legal advice.
Can a Baltimore firm buy managed security services or cybersecurity consulting separately?
Both. Managed security is the ongoing service: managed detection and response, email filtering, vulnerability scans and a monthly report, with engineers watching the console. Consulting is project work with an end date, such as a security assessment before an insurance renewal, an incident response plan, a written security program for a vendor questionnaire, or virtual CISO time with your leadership each quarter. Many Baltimore firms begin with an assessment and a short findings list, fix the top items, and then decide whether to hand ongoing monitoring to us or keep it in house. The deliverables are written either way and stay with you.
What should a Baltimore company do in the first hour of a ransomware attack?
Disconnect, do not delete. Unplug affected computers from the network or let our engineer isolate them through the EDR console, leave them powered on so the evidence survives, and phone the help desk or your dedicated engineer. Do not contact the attackers or promise payment. We work out which accounts and servers are touched, cut off the attacker's sessions and begin restoring from the immutable copy. NetSys has worked more than 30 ransomware cases over three years, and every one ended in a full recovery; clients who had a disaster recovery plan ready were operating again within 24 hours. Decisions about Maryland notices then sit with your counsel.
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.