Cybersecurity Services in Miami, FL
Miami's money, freight and real estate move by email and wire, which makes its businesses steady targets for impersonation, ransomware and account takeover. NetSys provides cybersecurity services for Miami companies: endpoint detection with analysts behind it, hardened Microsoft 365 sign-ins, email filtering, immutable backups and the evidence regulators ask for, all delivered remotely from Brooklyn.
The short answer
NetSys provides cybersecurity services in Miami, FL as a managed program. Every computer and server gets ThreatDown detection and response alongside Microsoft Defender for Business; every sign-in passes multifactor checks and Entra ID Conditional Access; mail runs through Barracuda; staff train and get tested with KnowBe4; Rapid7 scans for weaknesses; Keeper holds shared passwords; and Datto or Veeam keep immutable backup copies. Monitoring and emergency response run 24/7, and everything is delivered remotely, since NetSys does not send staff on site in Miami. IT security is available with or without full managed IT, priced per user per month after an assessment.
Service information by The NetSys Group. Our editorial standards.
How cybersecurity services are delivered in Miami
Security work is remote by nature, and for Miami it is remote only. ThreatDown agents on each endpoint report to analysts who can isolate a computer from the network as soon as a detection is confirmed, and our engineers review Microsoft 365 sign-in logs, mailbox rules and admin changes from Brooklyn. Conditional Access, Defender policies and Barracuda filtering are configured in cloud consoles, so nothing waits for a technician. If an incident does happen, containment is remote too: we disable accounts, revoke sessions, isolate machines and restore from backup while your staff follow short written instructions, such as unplugging a device. NetSys does not send engineers to Miami for incident response, and the plan we write with you assumes that from its first page. 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.
Attacks Miami-Dade has already seen
Local public bodies have been hit in public, and the lessons carry over to any office. During the first week of online school in 2020, Miami-Dade's district network was disrupted by a string of distributed denial-of-service attacks, and police arrested a 16-year-old student who admitted to eight of them. In June 2019 the Village of Key Biscayne reported a cyberattack the same month Riviera Beach agreed to pay a $600,000 ransom after an employee clicked a link in an email. In March 2021 the Conti gang hit Broward County Public Schools next door, demanded $40 million and published about 26,000 files when the district refused to pay. For a private firm the controls follow directly: filtering that stops the link, endpoint detection that stops the payload, backups an attacker cannot reach, and internet-facing services built to absorb a flood of traffic.
Wire fraud on Miami deals and closings
The FBI's Internet Crime Complaint Center counted $3.05 billion in reported business email compromise losses in 2025 from 24,768 complaints, second only to investment fraud, and in 2024 Florida was one of three states, with California and Texas, that led the country in both internet crime complaints and losses. In Miami the targets are predictable: real estate deposits and closings, payments to suppliers abroad, investment transfers and payroll changes. The defense is part technology and part procedure. We publish DMARC, SPF and DKIM records to reduce spoofing of your domain, turn on Barracuda's impersonation protection, alert on new inbox forwarding rules and on sign-ins from unfamiliar countries, and require phishing-resistant multifactor for finance staff. Then we help you write the rule that matters most: a change to wiring instructions is never accepted by email; it is confirmed by phone to a number already on file.
Rules Miami firms answer to
Much of Miami's security work is driven by regulators and customers. SEC-registered advisers and broker-dealers in Brickell must now run the written incident response program required by the 2024 amendments to Regulation S-P and notify affected customers within 30 days of learning of unauthorized access to sensitive information; larger firms had to comply by December 3, 2025 and smaller ones by June 3, 2026. Forwarders and importers in CTPAT keep written cybersecurity policies, individually assigned accounts and regular vulnerability testing. Medical practices answer to the HIPAA Security Rule; HHS proposed an update in January 2025, but it remains a proposal. Over all of them sits Florida's breach statute, section 501.171. We map each control to the rule that requires it and keep the evidence in one place for the examiner, the auditor or the insurer.
Managed security for firms with their own IT staff
Larger Miami firms often have an IT manager or a small team that runs the help desk and projects well but cannot watch alerts at night or keep up with every new attack technique. Managed security services fill that gap without replacing anyone. We take monitoring, detection and response, email protection, vulnerability management and the security reporting, and your team keeps day-to-day support, with the split written into the agreement so nobody assumes the other side is watching. Shared tools mean your staff see the same ThreatDown console and Rapid7 findings we do. A virtual CISO can sit above both, setting the program, reporting to leadership each quarter and coordinating with counsel during an incident. Firms without internal IT get the same controls as part of managed IT instead.
Cybersecurity in Miami: 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
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 Miami client.
What cybersecurity costs in Miami
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 Financial Services · IT for Importers & Distributors
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 all locations and service areas.
Also in Miami: Managed IT Services · IT Consulting · IT Support
Industry pages for Miami: Logistics IT Support in Miami, FL
Cybersecurity elsewhere: Tampa · Florida · Boca Raton · Fort Lauderdale · Jacksonville · Orlando
Related services: Penetration Testing · Cyber Insurance Readiness · Security Assessments · Managed Detection & Response (MDR)
Cybersecurity in Miami: FAQs
How does cybersecurity work for Miami organizations?
It is delivered remotely as a managed service. Agents on your computers feed ThreatDown's detection and our monitoring around the clock, sign-ins, email and Microsoft 365 settings are managed in the cloud, vulnerability scans run on a schedule, and your staff reach our help desk from 4 a.m. to 11 p.m. Eastern every day. A confirmed attack goes straight to your dedicated engineer at any hour. NetSys does not send engineers to Miami, so containment, recovery and evidence collection are designed to be done remotely, with your staff's help where a cable has to be pulled.
What does a cybersecurity program for a Miami business include?
The baseline is the same for a five-person office and a hundred-person firm: managed detection and response on every endpoint, multifactor authentication with Conditional Access, Barracuda email filtering with impersonation protection, DMARC on your domain, Keeper for shared passwords, KnowBe4 training with phishing tests, monthly patching, Rapid7 scanning and immutable backups tested by restore. Larger or regulated firms add written policies, an incident response plan, vendor-access controls, log retention and quarterly reporting for the board or the examiner.
Do you offer cybersecurity consulting without managed IT?
Yes. Firms with their own IT staff use us for a security assessment, a written security program, penetration testing, an incident response plan or a virtual CISO who reports to leadership each quarter. Findings and recommendations come in writing, ranked by risk and cost, and can be carried out by your team or ours. The free external penetration test, which we run remotely within a scope you approve, is a sensible place to begin, because it reveals what an outsider can already find.
What should we do in the first hour of a ransomware attack?
Call your dedicated engineer, do not pay or contact the attacker, and do not wipe anything. We isolate affected machines through ThreatDown, disable compromised accounts, preserve logs for your insurer and counsel, and confirm which backups are clean before any restore begins. NetSys has handled more than 30 ransomware incidents in the past three years, and every client fully recovered; those with a disaster recovery plan in place were back within 24 hours. Florida's 30-day breach-notice clock can start running during this work, so call counsel early.
Which cybersecurity requirements apply to businesses in Miami?
Every business holding Floridians' personal information falls under section 501.171 of the Florida Statutes, which requires reasonable security measures and, after a breach, notice to affected people within 30 days and to the Department of Legal Affairs when 500 or more Floridians are involved. Advisers and broker-dealers add SEC Regulation S-P as amended in 2024, medical practices the HIPAA Security Rule, tax preparers the FTC Safeguards Rule and IRS Publication 4557, and CTPAT members CBP's cybersecurity criteria. This is general information, not legal advice.
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.