Home / Microsoft 365 security
Microsoft 365 security
Microsoft 365, secured and looked after.
Your email, files and accounts live in Microsoft 365, so that is where attackers aim. As a Microsoft Partner, we protect it, watch it around the clock and deal with problems before they reach your data or your clients’ data.
What we cover
Every way in, covered.
Accounts
Sign-ins are monitored for signs of compromise, such as a login from an unexpected location or unusual behaviour. If something looks wrong we lock the account and investigate.
Every planEvery message sent and received is scanned for phishing, malware and scams, including emails pretending to be your colleagues, suppliers or clients.
Every planYour data
Sensitive files in Microsoft 365 are watched for misuse, so data leaving the business in ways it shouldn’t is spotted.
Every planYour domain
We set up and monitor email domain protection so only your approved services can send as you, and report every impersonation attempt.
Basic and aboveSettings
Microsoft 365 and Azure are configured securely and checked against an agreed baseline, so settings don’t quietly drift.
Ultimate, or add to any planBackup
Email and files are backed up independently of Microsoft, so we can restore what you need after deletion, a fault or an attack.
Basic and aboveWhy it matters
A stolen password is the usual way in.
In the UK Government’s latest Cyber Security Breaches Survey, phishing was by far the most common attack, affecting 38% of businesses. Protecting accounts and email is where Guardian starts.
Source: Cyber Security Breaches Survey 2025/2026, DSIT and Home Office, April 2026.
- Multi-factor sign-in checked for every person
- Risky sign-ins investigated by an analyst, not just logged
- Compromised accounts locked and reset quickly
- Leaked logins found on the dark web and reset
- Everything reported in your monthly Guardian report
Ready for security you can see working?
Book a short call. We’ll look at how you work today and recommend the Guardian plan that fits.