Add a second opinion to your Proofpoint or Mimecast stack
Email gateways are essential — but they weren't designed to catch every targeted attack. SpoofDefense adds a focused detection layer for the impersonation, vendor fraud, and BEC attacks that still reach inboxes.
Real-World Scenario
How a $90,000 wire fraud bypasses your gateway
This is a pattern we see repeatedly. Every individual step looks clean — until it's too late.
The email arrives
A supplier your company has worked with for years sends an updated bank account for upcoming payments. The email comes from the supplier's real domain — but the account was compromised.
Your gateway clears it
Your email gateway scans the message. Clean domain, no malicious links, no attachments flagged. It's delivered to your AP team without a second look.
The retrospective flag comes too late
Four hours later, the gateway's retrospective scan flags the message as suspicious. By then, a $90,000 wire transfer has already been initiated.
SpoofDefense catches it in real time
SpoofDefense analyzes the email in real time — detecting the unusual payment routing change, cross-referencing the domain against recent breach intelligence, and flagging the message before it's acted on.
The Gap
Why sophisticated attacks still get through
Lookalike Domains
Attackers register domains that visually mimic your vendors, partners, or executives. Gateways check reputation — not visual similarity.
Business Email Compromise
Attackers register clean domains that look almost identical to ones you trust. Your email security sees no history of abuse, so the message lands in the inbox.
Delayed Detection
Some attacks are flagged hours after delivery via retrospective analysis. By then, the wire transfer or credential harvest may already be done.
Internal Spoofing
Messages crafted externally to appear as though they originate from internal addresses, bypassing gateway rules that trust internal senders.
Complementary Coverage
Your gateway + SpoofDefense
Two layers, each focused on what it does best.
What Your Gateway Handles
What SpoofDefense Adds
SpoofDefense runs alongside your gateway. No MX changes, no mail flow impact, no policy conflicts.
How It Works
A second layer, not a replacement
SpoofDefense connects via API — no MX record changes, no impact on your existing mail flow. Your gateway handles volume filtering. We handle targeted detection.
- Spots domains that look like yours or your vendors’ — even if they were just registered
- Detects when someone is pretending to be an executive, coworker, or trusted contact
- Flags unusual payment requests, invoice changes, and wire transfer language
- Every suspicious email is reviewed twice — once by our detection engine, once by a deep analysis layer
- Continuously monitors for new domains that mimic your brand
- Deploys in 5 minutes — no DNS changes, no hardware, no agents
One blocked attack pays for itself
The average business email compromise costs $125,000. Many organizations running Proofpoint or Mimecast still experience successful phishing attacks — because gateways weren't built for every type of targeted threat. SpoofDefense costs a fraction of a single incident.
“We used to lose hours every week chasing suspicious emails. Spoof Defense caught a BEC attempt our Microsoft filters completely missed — it would have cost us $340K.”
David Park
IT Director, Regional Healthcare Group
$340K saved
FAQ
Common questions
Will SpoofDefense conflict with my Proofpoint or Mimecast rules?
No. SpoofDefense connects via API to your email platform (Microsoft 365 or Google Workspace), not through your mail flow. It operates independently of your gateway’s policies and rules.
Do I need to change my MX records?
No. SpoofDefense doesn’t touch your mail routing. Your gateway continues to process mail exactly as configured. SpoofDefense analyzes email metadata via API after delivery.
What does SpoofDefense catch that my gateway doesn’t?
Your gateway catches spam, known malware, and dangerous links. SpoofDefense catches the attacks that slip past those filters — emails from domains that look like ones you trust, people pretending to be executives or vendors, fake invoices, and payment redirect scams.
How does deployment work?
Connect your Microsoft 365 or Google Workspace tenant via OAuth. SpoofDefense begins analyzing email metadata immediately. No agents, no DNS changes, no gateway reconfiguration. Most deployments take under 5 minutes.
Can I see what SpoofDefense catches vs. what my gateway catches?
Yes. The SpoofDefense dashboard shows every detected threat with a detailed breakdown — detection method, risk score, and the specific indicators that triggered the alert. You can compare this against your gateway’s logs to see the coverage gap.
See what your email security is missing
Start a free trial and discover the threats that are getting through to your team.