Small businesses are not too small to target. Attackers run automated campaigns that hit thousands of companies at once, and a 20-person firm with one stolen Microsoft 365 password can lose a wire payment, a client list or a week of operations to ransomware. Most small businesses have no security staff, and many rely on a part-time IT provider or an office manager who also handles payroll.
AI has made the problem sharper. Phishing emails now read cleanly, fake invoices copy real vendor formatting, and voice clones can imitate an owner asking for an urgent transfer. Small business cybersecurity has to cover more than antivirus: email and identity protection, endpoint detection and response, backups and someone watching alerts when the office is closed.
The ten cybersecurity companies for small business below sell products or services that fit lean teams, either directly or through the IT providers that support them. We compared what each one covers, how much management it needs and whether a human team responds to threats. If you are just getting started, work through our small business cybersecurity checklist first, and if you need an IT partner to run these tools, see our list of managed IT services for small business.
Cybersecurity Companies For Small Business At A Glance
Company
Headquarters
Best For
Core Services
Huntress
Columbia, USA
Small businesses and their IT providers that want a human SOC behind every alert
Managed EDR, managed ITDR, managed SIEM, security awareness training
Microsoft Defender for Business
Redmond, USA
Microsoft 365 shops with up to 300 users that want built-in endpoint protection
Next-gen antivirus, EDR with attack disruption, vulnerability management, device protection
CrowdStrike Falcon Go
Austin, USA
Small firms that want enterprise-grade endpoint protection bought online by the device
Next-gen antivirus, device control, mobile protection, firewall management, Express Support
Sophos
Abingdon, United Kingdom
Small businesses that want 24/7 MDR with incident response included
Sophos MDR, Intercept X endpoint, firewall, email security, incident response
ThreatDown
Santa Clara, USA
Budget-conscious small businesses that want one agent for EDR, patching and email
EDR, MDR, ITDR, vulnerability and patch management, email security
Coro
Chicago, USA
Lean IT teams that want endpoint, email, cloud app and network security in one console
Endpoint, email, cloud app, identity, network and data protection, awareness training, SaaS backup
Defendify
Portland, USA
Small organizations that want assessments, policies, training and MDR from one vendor
Best Cybersecurity Companies For Small Business For 2027
1. Huntress — Managed EDR And ITDR Backed By A 24/7 Human SOC
Huntress builds managed security for small and midsize businesses, sold mostly through the IT providers that support them. Its core products are managed EDR, which detects and responds to threats on endpoints around the clock, and managed ITDR, which watches Microsoft 365 and Google Workspace for account takeover and business email compromise. It also offers managed SIEM with filtering and long-term retention, and managed security awareness training.
The word that matters is managed. Huntress pairs its software with a 24/7 security operations team that investigates detections and handles the threat until it is gone, instead of sending a small business an alert it cannot interpret. That fits the reality that most small companies have no one awake at 3 a.m. to isolate a laptop. Huntress says protection can be set up in under 30 minutes. Its identity coverage is especially relevant because so many small business breaches start with a stolen Microsoft 365 login rather than malware. Huntress is a strong choice for firms whose IT provider already uses it or can add it.
Microsoft Defender for Business is Microsoft’s endpoint security product for small and medium-sized businesses with up to 300 users. It protects Windows, macOS, iOS and Android devices with next-generation antivirus, AI-powered endpoint detection and response with automatic attack disruption, and vulnerability management. Microsoft lists it at $3.00 per user per month on an annual subscription, covering up to five devices per user, and it is also included in Microsoft 365 Business Premium.
For small businesses that already run on Microsoft 365, this is often the most practical place to start, because the licensing may already be paid for and the tools integrate with the identity and email controls in the same tenant. Wizard-based onboarding and monthly security summary reports keep management light, and a server add-on extends coverage to file and application servers. The limitation is that Defender for Business is software: it does not include a team that responds for you. Many small firms pair it with an IT provider or an MDR service that monitors the alerts. It suits owners who want solid endpoint protection for small business at a low per-user cost.
CrowdStrike, based in Austin, Texas, packages its Falcon platform into tiers that small businesses can buy online. Falcon Go is the entry bundle, priced at $7.99 per device per month or $59.99 per device per year, with purchases limited to 100 devices. It includes next-generation antivirus, device control, mobile device protection and Express Support, which CrowdStrike describes as help for small and medium businesses. Falcon Pro and Falcon Enterprise add more capabilities at higher prices.
The value of Falcon Go is access to the same endpoint technology large enterprises use, without a sales cycle. A small business can sign up, deploy the lightweight agent and get ransomware and malware protection that does not depend on signature updates. A 15-day free trial lets owners test it before paying. Firms that want a team to watch and respond can step up to Falcon Complete, CrowdStrike’s fully managed MDR service, which is priced through sales. Falcon Go suits small offices with a tech-comfortable owner or IT contractor who wants strong prevention on every laptop and is willing to manage the console or hand it to an IT provider.
4. Sophos — 24/7 MDR With Uncapped Incident Response And A Breach Warranty
Sophos, headquartered in Abingdon in the United Kingdom, sells endpoint, firewall and email security, and its Sophos MDR service is one of the most widely used managed detection and response offerings for smaller organizations. Sophos MDR combines AI-driven detection with human analysts who monitor, investigate and respond around the clock, run proactive threat hunting and handle critical incident response without hourly caps.
For small businesses, the important detail is what happens after detection. Sophos says its incident response removes threats fully rather than just containing them, and it includes root cause analysis, a dedicated incident response advisor and a breach protection warranty. The service works with Sophos products and also with Microsoft, CrowdStrike, SentinelOne and hundreds of other tools, so a business does not have to replace what it already owns. Sophos MDR is listed as a Microsoft-verified small and medium business solution, and Sophos runs nine regional security operations teams. It is a good fit for small companies that want managed detection and response for small business with a clear response commitment.
5. ThreatDown — One Agent For EDR, Patching And Email With Low-Cost MDR
ThreatDown is the business security brand of Malwarebytes, based in Santa Clara, California, and it is built for SMBs, mid-market companies and MSPs. Its single lightweight agent covers EDR, identity threat detection, vulnerability and patch management, and email security, all managed from one console. That consolidation matters for small teams that do not want to juggle four products and four dashboards.
ThreatDown’s MDR service pairs a security operations team with AI to find, contain and remove threats, and ThreatDown lists it at roughly $10 per device per month with 24/7 coverage from day one. For a small business, that price point brings around-the-clock monitoring within reach in a way that building an internal SOC never will. Built-in patch management also closes one of the most common gaps in small offices: unpatched browsers, PDF readers and VPN clients that attackers exploit. ThreatDown suits small businesses and IT providers that want endpoint protection for small business, patching and optional MDR from one vendor at a predictable per-device cost.
Coro is a Chicago-based cybersecurity company that targets small and midsize businesses with limited IT staff, selling both directly and through MSPs. Its cloud platform combines endpoint protection, email security, cloud application and identity protection, network protection, data protection, security awareness training and cloud backup for SaaS data, all run from one console and a single endpoint agent. Coro says more than 3,000 organizations use it.
Coro’s appeal is breadth without complexity. Many small businesses buy antivirus, then discover that their real exposure is in Microsoft 365 or Google Workspace: shared files with public links, forwarded mail rules and compromised accounts. Coro covers those cloud apps alongside the endpoint, and it automates remediation for many common threats so a small IT team is not buried in alerts. Its modular design lets a business start with the pieces it needs and add more later. Coro is a good fit for companies with one or two IT generalists who want small business cybersecurity coverage across devices, email and cloud apps without managing several separate tools.
7. Defendify — All-In-One Stack With Policies, Training, Testing And MDR
Defendify, based in Portland, Maine, packages the basics of a security program into one platform. Its detection and response layer includes 24/7/365 managed detection and response, incident response plans and threat alerts. Policies and training cover phishing simulations, awareness training, videos and an acceptable use policy, and its assessments and testing layer includes cybersecurity assessments, penetration testing, vulnerability scanning and compromised password checks.
Defendify stands out for covering the non-technical pieces that small businesses often skip: written policies, an incident response plan and regular staff training, which cyber insurers and larger customers increasingly ask about. It also offers free starting tools, including an essentials package and a two-minute cybersecurity health checkup, and it backs customers with a service warranty that provides financial assistance of up to $1 million for a covered cyber incident. For a small company that has never had a formal security program, Defendify offers a structured way to build one without hiring a consultant for each piece. It suits small and growing organizations that want one vendor and one invoice.
8. Field Effect — MDR With Proactive Risk Findings From An Ottawa Security Team
Field Effect is headquartered in Ottawa, Canada, with a US office in Lake Mary, Florida, and offices in the UK and Australia. Its main product is Field Effect MDR, offered in Complete, Core and Endpoint editions, which combines a 24×7 SOC staffed by analysts with AI-native detection that blocks threats autonomously. Coverage spans endpoints, cloud services and the network, and Field Effect has added AI governance coverage.
Beyond alerting, Field Effect emphasizes proactive risk management, flagging vulnerabilities and misconfigurations before attackers find them, which suits small businesses that need someone to tell them what to fix next. It also offers incident response, IR readiness planning and cybersecurity assessments, and it provides a free attack surface report that shows what an outsider can see. Field Effect sells to IT teams and through MSPs, so small companies can buy it directly or through their IT provider. It is a good option for small businesses in Canada and the US that want managed detection and response for small business with clear guidance on reducing risk over time.
9. Guardz — MSP-Delivered Workspace Security With 24/7 MDR
Guardz is a workspace security platform with US headquarters in Miami and an EMEA headquarters in Tel Aviv. It is built for managed service providers who protect small and midsize clients, and it combines 24/7 managed detection and response with identity threat detection, email security, security awareness training, browser security, endpoint protection using SentinelOne EDR, cloud data protection and external footprint monitoring for leaked credentials.
Small businesses usually reach Guardz through their IT provider rather than buying it themselves. That model works well for very small companies, since the MSP handles deployment and the Guardz platform produces client-facing reports that summarize security posture and remediation in plain terms. Its focus on identity and email is well matched to how small businesses actually get breached: phishing, account takeover and business email compromise. Per-seat pricing and a 14-day trial lower the barrier for MSPs to add it. If your IT provider does not offer a security stack today, ask whether they would consider an MSP security platform like Guardz rather than piecing together separate tools.
10. Blackpoint Cyber — Former NSA Operators Running 24/7 MDR Through MSPs
Blackpoint Cyber is based in Ellicott City, Maryland, and was founded by former NSA and military professionals. It has served its community since 2014. Its CompassOne platform pairs a 24/7 security operations center with managed EDR, cloud MDR, SIEM and logging, vulnerability management, cloud posture, asset inventory, application control and identity threat protection, with a security posture rating to track progress.
Blackpoint’s SOC is known for acting on threats rather than only sending alerts, which is the right default for small businesses that cannot respond themselves. The company sells mainly through MSPs, helping them consolidate their security stacks and offer around-the-clock protection to their clients, though it also works with businesses that want a security partner directly. For a small company, that means the IT provider can stay the single point of contact while Blackpoint handles detection and containment behind the scenes. It is a strong fit for small businesses served by an MSP that wants a security partner with offensive security experience and a hands-on response model.
How To Choose A Cybersecurity Company For A Small Business
The right choice depends less on features and more on who will actually run the tools. These questions help small businesses narrow the field quickly.
Who Will Respond When Something Happens At Night?
This is the most important question. Software alone sends alerts. Managed detection and response means a team investigates and contains threats for you. If you have no one on call, prioritize an option with a 24/7 human SOC or make sure your IT provider supplies one.
Do We Buy Direct Or Through Our IT Provider?
Several companies on this list sell mainly through MSPs. If you already have an IT provider, ask what security stack they use and what it costs per user. If you do not, a self-serve product like Microsoft Defender for Business or Falcon Go can be a reasonable start.
Does It Cover Email And Microsoft 365, Not Just Laptops?
Most small business breaches begin with a stolen login or a fake invoice. Make sure your choice protects email and cloud accounts, including detecting suspicious sign-ins and mailbox rules. Our guide to email security for growing businesses explains what to look for.
Will This Satisfy Our Cyber Insurer And Customers?
Insurers commonly ask about multi-factor authentication, endpoint detection and response, backups and training. Larger customers may send security questionnaires. Pick tools that let you answer those questions with evidence, not guesses.
What Is The Real Monthly Cost?
Compare per-user or per-device pricing, minimums, onboarding fees and what counts as an extra charge during an incident. A cheaper product that needs hours of management each month may cost more than a managed service.
Conclusion
Small business cybersecurity does not require an enterprise budget, but it does require someone watching. Huntress, Sophos, Field Effect, Blackpoint Cyber and ThreatDown all offer human-led monitoring and response. Microsoft Defender for Business and CrowdStrike Falcon Go give self-managed offices strong endpoint protection at published prices. Coro and Defendify bundle many controls into one platform, and Guardz gives MSPs a single stack for many small clients.
Start by deciding who will respond to alerts, confirm that email and cloud accounts are covered, and choose the option you can actually keep running month after month.
