Email β€” still the #1 way attackers get in.

Over 90% of breaches start with an email. We layer modern phishing defence on top of Microsoft 365 β€” and train your people to be the last line, not the weak link.

Multi-layer defence

Phishing, BEC, ransomware β€” blocked, sandboxed, reported.

Modern phishing slips past basic filters. Our stack catches it before it lands β€” and trains users on the rare miss.

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Anti-phishing & impersonation

AI-driven detection of CEO fraud, BEC, look-alike domains and supplier compromise.

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Attachment sandboxing

Every attachment detonated in a safe sandbox before delivery β€” catches zero-day payloads.

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Time-of-click link rewriting

URLs re-checked the moment the user clicks β€” protects against weaponised-after-delivery links.

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DMARC, SPF, DKIM

We design and enforce DMARC so attackers can’t spoof your own domain at your customers.

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User report button

One-click "Report phish" inside Outlook routes the message straight to our SOC for analysis and tenant-wide remediation.

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Phishing simulation

Realistic simulations + bite-size training. Track risk per user, per department, per quarter.

BEC & supplier-chain attacks

The Β£40k invoice scam β€” solved.

Business Email Compromise (BEC) is the costliest attack in the UK. We layer detection + process to stop the "change the bank details" email cold.

  • βœ“
    Supplier-domain monitoringDetect look-alike registrations of your suppliers in real time.
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    External-sender bannersClear warnings when an email is from outside the organisation.
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    Internal display-name protectionFlag emails impersonating your CEO/FD/MD before they land.
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    Process guard-railsOut-of-band verification rules for finance staff β€” built into the workflow.
  • βœ“
    Tenant-wide claw-backDiscovered a phish? We pull it from every inbox in minutes.
Firstnet Portal
FAQ

Frequently asked questions

Isn’t Microsoft’s built-in protection enough?

For some businesses, Defender for Office 365 (Plan 1 or 2) is sufficient β€” and we tune it expertly. For higher-risk sectors we layer a specialist gateway.

Will users see false positives in quarantine?

We tune ruthlessly. A clean monthly digest goes to users; suspicious items stay quarantined for our review.

What about DMARC enforcement?

We move clients from "none" β†’ "quarantine" β†’ "reject" over 6–12 weeks, monitoring legitimate sender alignment carefully so nothing breaks.

Do you run phishing simulations?

Yes β€” quarterly campaigns with branded training, reported per user, with a risk score for each department.

Ready to take IT off your plate?

Free, no-pressure scoping call with a Firstnet Direct specialist.