Email security

Email security and anti-phishing that stops business email compromise

Over 90% of breaches still start with an email. Lion Group deploys AI-driven email security inside Microsoft 365 and Google Workspace to stop phishing, BEC, account takeover, impersonation and QR-code attacks — in minutes, with no MX record change.

The email threats we stop

Secure email gateways were built for spam and malware. The attacks that cause real loss today are quiet, targeted and text-only.

Phishing and spear phishing

Credential-harvesting pages, malicious attachments and never-seen-before links, including QR-code phishing (quishing) that hides the payload in an image.

Business Email Compromise

Invoice fraud, payroll diversion, supplier-account changes and CEO fraud — clean messages with no malware, detected through behaviour and language, not signatures.

Account takeover

Compromised internal mailboxes sending lateral phishing to colleagues, customers and partners, caught by scanning internal traffic as well as inbound mail.

Impersonation and deepfakes

Look-alike domains, display-name spoofing, VIP impersonation and AI-generated voice or video follow-ups to an email request.

How our anti-phishing protection works

We connect to your tenant through API, learn normal communication behaviour for every mailbox, and judge each message on intent and relationship rather than on signatures alone. Confirmed threats are removed automatically from every mailbox that received them, and your users become a detection sensor instead of a liability.

  • API-based deployment for Microsoft 365 and Google Workspace — no MX change, no agents
  • Adaptive AI baseline of who normally emails whom, in what tone, about what
  • Automated remediation that pulls a malicious message from every affected mailbox
  • Inbox-level scanning of internal and external traffic, not just the perimeter
  • Phishing simulation and security-awareness training for employees
  • One-click user reporting banner that feeds the detection model
  • SIEM, SOAR, XDR and EDR integration so incidents land in your existing workflow
  • Per-mailbox licensing with annual or pro-rata terms, managed in the Lion Group portal

Why buy it through Lion Group

We are a value-added distributor, not a reseller price list. You get security practitioners for design and rollout, and a portal that keeps licensing boring.

  • Deployment and tuning by senior email-security engineers
  • Tenant provisioning in minutes, including MSP multi-tenant setups
  • Every licence, seat and expiry visible in one console
  • Renewals, upgrades and pro-rata add-ons ordered in a few clicks
  • Partner pricing that flows down automatically to your clients
Talk to an email security expert

Email security FAQ: phishing, BEC and authentication

What is email security?

Email security is the set of controls that protect mailboxes and email traffic from phishing, business email compromise, malware, account takeover and data loss. Modern email security works inside the mailbox through API integration with Microsoft 365 or Google Workspace, rather than as a gateway in front of it, so it can inspect internal mail as well as inbound mail.

What is Business Email Compromise (BEC)?

Business Email Compromise is a targeted attack in which an attacker impersonates an executive, employee, supplier or partner to trick someone into approving a payment, changing bank details or sharing sensitive data. BEC messages usually carry no malware or malicious link, so signature-based email filters let them through. Detection relies on behavioural baselines, sender-relationship graphs and natural-language analysis of intent and tone.

Does Microsoft 365 need extra anti-phishing protection?

Microsoft 365 and Google Workspace block high-volume commodity spam and known malware well. They are far weaker against low-volume, socially engineered attacks: BEC, VIP impersonation, supplier fraud, QR-code phishing (quishing) and deepfake-assisted requests. That gap is why most organisations add a dedicated anti-phishing layer on top of their native protection.

What is DMARC and how does it relate to email security?

DMARC tells receiving mail servers what to do with mail that fails SPF and DKIM authentication, which stops attackers spoofing your own domain. It protects your outbound identity and your brand, while inbound anti-phishing protects your people. You need both — see our DMARC management page for how Lion Group runs enforcement for you.

How quickly can email security be deployed?

With native API integration deployment takes minutes: no MX record change, no mail-flow risk, no endpoint agents. Historical mailbox scanning starts immediately, so you see the phishing and BEC attempts already sitting in mailboxes on day one.

Also need to stop domain spoofing?

DMARC enforcement protects the mail you send. We run it as a managed service.

DMARC management