By Cargo / Building Materials
Building Materials Carriers — Email Security
79.6% of active building materials carrier domains have no enforced DMARC — leaving this segment open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
79.6%
national: 80.1%
p=reject
7.7%
national: 7.5%
Microsoft 365
40.0%
national: 38.1%
M365 + no DMARC (carriers)
22,333
national: 92,822
MTA-STS
3.5%
national: 3.3%
DNSSEC
5.2%
national: 6.1%
Dead domains
4,635
of 76,690 scanned
Total carriers
87,015
4,636 with dead domain
Risk bands — Building Materials carriers
Carrier counts by risk band (composite email-security pain score). Critical = score 70+; Minimal = score <15.
| Risk band | Score range | Carriers | Domains |
|---|---|---|---|
| Critical | score 70+ | 7,536 | 6,812 |
| High | score 50–69 | 24,575 | 22,032 |
| Medium | score 30–49 | 35,629 | 31,290 |
| Low | score 15–29 | 13,921 | 11,374 |
| Minimal | score <15 | 718 | 547 |
Building Materials vs. national average
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Data as of 2026-05-20 from public DNS measurements. Statistics are domain-weighted unless noted. Cargo segment membership is based on FMCSA Company Census cargo flags. Methodology: read the full index.