By Cargo / Refrigerated / Cold Chain
Refrigerated / Cold Chain Carriers — Email Security
78.1% of active refrigerated / cold chain carrier domains have no enforced DMARC — leaving this segment open to email impersonation, payment-redirect fraud, and cargo theft via phishing.
No enforced DMARC
78.1%
national: 80.1%
p=reject
8.7%
national: 7.5%
Microsoft 365
35.0%
national: 38.1%
M365 + no DMARC (carriers)
3,656
national: 92,822
MTA-STS
3.2%
national: 3.3%
DNSSEC
8.0%
national: 6.1%
Dead domains
745
of 14,538 scanned
Total carriers
16,211
745 with dead domain
Risk bands — Refrigerated / Cold Chain 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+ | 1,240 | 1,172 |
| High | score 50–69 | 4,651 | 4,286 |
| Medium | score 30–49 | 6,596 | 5,920 |
| Low | score 15–29 | 2,835 | 2,296 |
| Minimal | score <15 | 144 | 119 |
Refrigerated / Cold Chain 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.