Secure Your Microsoft 365 Tenant — the Plain-English Way
Free, jargon-free guides that walk you through every M365 security setting that matters. Written for the person who owns IT, whether that is your full-time job or just your Tuesday.
Two Ways to Secure Your Tenant
Do it yourself with our free guides, or hand the whole thing off. Both paths land at the same secure baseline.
DO IT YOURSELF
Follow the free plain-English guides
Every guide here is free and written in plain English. Work through them at your own pace and configure the settings yourself.
DONE FOR YOU
Have M365Shield deploy the baseline
Short on time, or want it handled by someone who does this every day? M365Shield deploys the same baseline for you. Fixed scope. Fixed price. No ongoing contract required.
Security Guides & Resources
START HERE
How to Secure Your Microsoft 365 Tenant in 5 Steps
A step-by-step guide to locking down your M365 tenant, written for non-technical business owners.
DRIFT CHECK
M365 quarterly drift check
A quarterly playbook to catch the M365 security settings that drift out of place over time, with priority rankings.
How to Block Legacy Authentication in Microsoft 365
Legacy authentication is the #1 way attackers bypass MFA. Learn what these protocols are and how to turn them off safely.
Microsoft 365 Security in a Day: What a Managed Service Does
See what a 72-hour managed deployment includes and why businesses choose it over DIY.
M365 Security Questions Answered: MFA, Conditional Access in Plain English
11 FAQs about M365 security answered without jargon.
M365 Security Implementation Case Study: A 42-Person Brokerage
An illustrative composite walkthrough: default Business Standard to a fully hardened baseline in 90 days, the five surprises along the way, and the cyber insurance renewal outcome.
CIS M365 Benchmark Checklist for Small Business (37-Item Self-Assessment)
A line-by-line CIS Microsoft 365 Benchmark self-assessment for a 10–50 person business, with the verification path for each item and the controls SMBs miss most often.
What Is SecureYourTenant?
SecureYourTenant is a collection of practical security guides written for business owners and IT teams. We explain what M365 security gaps look like, why they matter, and how to close them.
Most Microsoft 365 tenants ship with default configurations that don't meet insurance requirements and leave companies exposed to common attack vectors. These guides help you understand the gaps — and show you the path to a secure baseline.
When you're ready to deploy, M365Shield can secure your tenant in 72 hours. No downtime. No disruption. Fixed scope. Fixed price.
Ready to Secure Your Tenant?
Start with a free risk assessment. We'll identify the gaps in your M365 configuration in 24 hours.
Get Your Risk Assessment