01
Carrier impersonation
An attacker registers a domain one character off your broker name and quotes shippers your loads at a discount. Cargo dispatched, never delivered. The first call you get is the shipper asking where their freight is.
Industry · Freight Brokers · Email Security
Stop broker BEC and invoice redirection fraud.
Freight brokers run on email. So do the attackers who target them. EFROS rolls out DMARC to p=reject, hardens Microsoft 365 against business email compromise, and stands up the out-of-band workflow that catches wire-redirection fraud before the money clears.
By Stefan Efros, CEO & Founder, EFROSReviewed by Stefan Efros, CEO & Founder, EFROS
Reviewed by CSO ·
Why freight brokers are targeted
The fraudster knows the load number, the carrier MC, the broker dispatcher's name, and the rate confirmation timing. The wire instructions change in transit. The actual money clears in 90 minutes.
FBI IC3 has tracked freight-broker invoice redirection as a top-five BEC subtype since 2023. The defense is mechanical: SPF/DKIM/DMARC at p=reject on every domain the broker mails from, dual-control on every payment-instruction change, and out-of-band verification using the carrier's pre-recorded ANI — not the new phone number on the new invoice. EFROS deploys all three. DMARC rollout guide.
DMARC enforcement and BEC defense detail follows.
Who this is for
Freight brokers, 3PLs, and logistics service providers running invoice and dispatch operations on Microsoft 365 or Google Workspace, where a single successful BEC event can cost six figures of irrecoverable funds.
Where the loss actually happens.
02
Invoice redirection fraud
Your accounts-payable mailbox is silently compromised. Outbound invoices to shippers leave your tenant with the banking details rewritten. By the time the wire reconciles, the attacker is offshore.
03
Spoofed dispatcher email
Without DMARC enforcement, anyone on the internet can send mail from your domain. Drivers and carriers get fake dispatch instructions and route changes; they have no way to tell the real one apart.
04
BEC against accounting
Attacker poses as your CEO and asks the controller for a same-day wire to a new factor. Without out-of-band verification policy in place, the wire goes.
05
Compromised broker session token
Stolen OAuth or session token gives the attacker mailbox access for weeks without re-authentication. They watch correspondence, learn the patterns, then strike when a large shipment is in motion.
06
Subdomain takeover for phishing
An abandoned subdomain pointing at a deprovisioned SaaS becomes a phishing host operating from your real domain. Your customers click, they trust, they lose.
What's included.
- DMARC rollout from p=none → quarantine → reject with weekly reporting review
- SPF flattening + DKIM key rotation
- MTA-STS enforce + TLS-RPT enabled
- BIMI logo registration for inbox brand authentication
- Microsoft 365 anti-phish, Safe Links, Safe Attachments tuned for broker traffic
- Conditional Access policies tied to broker portal and accounting roles
- Mailbox-level forwarding-rule monitoring + alerting
- Lookalike domain registration + monitoring
- Out-of-band wire/bank-change verification workflow (process not technology)
- Carrier and shipper communication policy documentation
FAQ.
What does DMARC p=reject actually mean for our business?
Mail from anyone other than your authorized senders is dropped by receivers before it lands in carrier or shipper inboxes. Spoofed dispatcher messages and fake invoices stop working from outside. The rollout is staged so legitimate third parties (factor, fuel program, ELD vendor) don't get blocked in the cutover.
How long does a full DMARC rollout take?
Eight to twelve weeks for a brokerage with 20 to 100 mailboxes. Phase one (visibility, p=none) goes live in week one. Phase two (quarantine) at week four. Phase three (reject) once the report aggregator confirms no legitimate senders are failing.
Will we still be able to receive payments from new shippers?
Yes. Inbound mail is not affected by your own DMARC policy. What changes is that your domain stops being usable as a forgery target — so when a shipper sees mail claiming to be from you, they can trust it.
Do we need a separate engagement for the M365 piece?
Microsoft 365 hardening is bundled into this engagement. The Defender configuration, Conditional Access, anti-phish policy tuning, and mailbox auditing all run alongside the DMARC rollout because they reinforce each other.
Related programs
Logistics Cybersecurity
Full vertical program: ELD, GPS, TMS, dispatch, accounting under one accountable plan.
OpenMicrosoft 365 Security
Defender XDR + Purview DLP + Conditional Access — the tenant config brokers actually need.
OpenDMARC Rollout Guide
Step-by-step DMARC rollout playbook for brokerage operations carrying wire-fraud exposure.
OpenFreight broker program stack
EFROS for logistics (umbrella)
Full logistics-vertical cybersecurity coverage.
OpenDMARC rollout
Email auth that prevents wire-fraud impersonation.
OpenM365 hardening
Tenant configuration for brokerage operations.
OpenMDR with freight-fraud detection
24/7 SOC with logistics-tuned wire-fraud and load-board scam detection.
OpenIR for wire fraud
FBI IC3 reporting + bank recall procedures.
OpenBEC incident pattern
Real BEC playbook applicable to brokerage environments.
Open