Cybersecurity for growing businesses
Lock down your cloud.
Land in the inbox.
Cyber Tom secures Microsoft 365 and Azure, fixes email deliverability and keeps watch over your business — so you can get on with running it.
- Microsoft 365
- Entra ID
- Defender
- Intune
- Azure
- Exchange Online
- Purview
- SPF
- DKIM
- DMARC
- MTA-STS
- BIMI
What we do
Three ways we keep you secure
Focused services for businesses that run on Microsoft — delivered by someone who does this every day.
Email Deliverability & Authentication
Get your email into the inbox and stop criminals sending as you. We configure SPF, DKIM and DMARC properly, move you safely to enforcement, and keep watch on your domain reputation.
Learn moreMicrosoft 365 & Azure Security
Most Microsoft tenants are running on defaults that attackers know well. We harden identity, devices, email and data in Microsoft 365 and Azure using the licences you already pay for.
Learn moreManaged IT & Security Services
Security is not a one-off project. We keep watch on your environment, apply fixes, respond when something looks wrong and give you a named expert to call — without the cost of an in-house team.
Learn moreFree tool
Can someone send email as you?
Check your domain’s SPF, DKIM, DMARC, MTA-STS and BIMI records in seconds. No sign-up, nothing stored.
How we work
A clear path from exposed to protected
- 01
Assess
We review your Microsoft 365, Azure and email configuration against recognised baselines and show you exactly where the gaps are.
- 02
Harden
We fix the issues in priority order — biggest risk first — with change notes so nothing happens behind your back.
- 03
Monitor
Alerts, sign-ins and email reports are watched continuously, so threats are spotted early and handled quickly.
- 04
Report
A short monthly summary in plain English: what we saw, what we fixed and what we recommend next.
Why Cyber Tom
Straight-talking security, done properly
No scare tactics and no jargon. Just practical protection that fits the way your business already works.
Use what you already pay for
Most businesses own powerful Microsoft security tools they have never switched on. We start there before recommending anything new.
A named expert, not a ticket queue
You deal directly with the person doing the work, who knows your environment and answers in plain English.
No lock-in
Everything is documented and stays in your tenant. If you ever leave, you keep the lot — configuration, notes and access.
We practise what we preach
This site ships with a strict content security policy, HSTS preload and full email authentication. Check it yourself.
Find out where you stand.
A free 30-minute call. We’ll look at your Microsoft 365 tenant and email setup together and tell you honestly what needs fixing first — whether or not you work with us.