For SMBs & IT teams
Cybersecurity Guidesfor Small Business —Without the Jargon.
Practical, plain-English security guides written for the teams running Microsoft 365, managing compliance, and making real decisions without a full security department.
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Who this is for
Built for the people
running security without a CISO.
Most security content is written for enterprise teams with dedicated analysts. This isn't. It's for the rest of us.
IT Managers & MSPs
You're the one-person security team for 50–500 users. You need clear answers, not another 300-page framework.
SOC setupM365 hardeningVendor selection
Small Business Owners
Security isn't your job, but a breach would be your problem. These guides help you ask the right questions and make smarter decisions.
Compliance basicsCyber insuranceIncident response
Compliance Leads
Chasing SOC 2, ISO 27001, or Cyber Essentials? We break down what each framework actually requires — and what you can skip.
SOC 2ISO 27001Cyber Essentials
Topic areas
Six areas. One goal: keep
your business protected.
SOC & Monitoring
12 guidesSet up threat detection, respond to alerts, and build a monitoring stack that doesn't require a full team.
Browse guides
Microsoft 365 Security
14 guidesLock down email, SharePoint, and Teams. Configure Defender, Conditional Access, and MFA the right way.
Browse guides
Managed Security
8 guidesEverything you need to know before signing with an MSSP or MDR provider — questions to ask, red flags to spot.
Browse guides
Compliance & Certification
10 guidesSOC 2, ISO 27001, Cyber Essentials — broken down into what you actually need to do, not what sounds impressive.
Browse guides
Incident Response
7 guidesBuild an incident response plan before you need one. Know exactly what to do when ransomware hits or data leaks.
Browse guides
Tool Comparisons
9 guidesHonest head-to-head reviews of EDR, SIEM, password managers, and more — written for SMB budgets and requirements.
Browse guides
Start here
New to CyberSubmarine?
Read these first.
SOC & Monitoring3 min read
What does 24/7 SOC monitoring actually do for your business?
24/7 SOC monitoring is more than alerts and dashboards. Here is what it actually does, what it costs in 2026, and when an SMB genuinely needs it.
Read guide
Managed Security3 min read
Best managed XDR providers for Microsoft 365 SMBs in 2026
Six managed XDR providers for Microsoft 365 SMBs in 2026, compared on operating model, response authority, and exit cost. Microsoft-native and vendor-stack options reviewed.
Read guide
Compliance3 min read
What cyber insurance actually covers (and what it doesn't)
Cyber insurance for businesses sounds simple but policies have sharp edges. Here is what cover includes, what it excludes, and how a claim actually lands.
Read guide
Managed Security3 min read
White label SOC for MSPs: what it is and why you need it
White label SOC for MSPs lets you sell 24/7 security under your brand without building a SOC. Here is how it works, what to look for, and how to choose.
Read guide
Managed Security3 min read
What is managed XDR? A plain-English guide for IT managers
Managed XDR services bundle a detection platform with a vendor's analysts. Here is what they include, what they don't, and how to choose one in 2026.
Read guide
SOC & Monitoring3 min read
SOC vs MDR vs XDR: which does your business actually need?
SOC vs XDR is the wrong question on its own. Here is how SOC, MDR, and XDR actually differ, where they overlap, and how to choose for an SMB in 2026.
Read guide
Latest
Recent guides
Managed Security3 min
Best managed XDR providers for Microsoft 365 SMBs in 2026
Six managed XDR providers for Microsoft 365 SMBs in 2026, compared on operating model, response authority, and exit cost. Microsoft-native and vendor-stack options reviewed.
Read guide
Compliance3 min
What cyber insurance actually covers (and what it doesn't)
Cyber insurance for businesses sounds simple but policies have sharp edges. Here is what cover includes, what it excludes, and how a claim actually lands.
Read guide
Managed Security3 min
White label SOC for MSPs: what it is and why you need it
White label SOC for MSPs lets you sell 24/7 security under your brand without building a SOC. Here is how it works, what to look for, and how to choose.
Read guide
Managed Security3 min
What is managed XDR? A plain-English guide for IT managers
Managed XDR services bundle a detection platform with a vendor's analysts. Here is what they include, what they don't, and how to choose one in 2026.
Read guide
SOC & Monitoring3 min
SOC vs MDR vs XDR: which does your business actually need?
SOC vs XDR is the wrong question on its own. Here is how SOC, MDR, and XDR actually differ, where they overlap, and how to choose for an SMB in 2026.
Read guide
SOC & Monitoring3 min
What does 24/7 SOC monitoring actually do for your business?
24/7 SOC monitoring is more than alerts and dashboards. Here is what it actually does, what it costs in 2026, and when an SMB genuinely needs it.
Read guide
60+
Guides published
Covering every major threat vector facing SMBs today.
No ads
Ever
We don't sell ads. Revenue comes from transparent affiliate links and optional consulting.
Plain English
Always
If a concept needs a dictionary to understand, we haven't explained it properly yet.
Vendor-neutral
By design
When we recommend a tool, we tell you why — and what the alternatives are.
Our approach
How we decide what to publish.
Practical over theoretical
Every guide ends with a checklist or next step. No filler, no padding.
Updated when things change
We flag outdated content and update guides when tools or regulations change.
Written by practitioners
Our authors have run IT at SMBs. They know the constraints, the budget pressure, the 2am pages.