An independent cybersecurity review across major Tennessee auto dealerships reveals a wide range of results. Many organizations handle sensitive communications daily, yet show significant gaps in email authentication and transport security.
Using data from audit.emailmenow.com, we evaluated each domain across email, website, and network security — including SPF, DKIM, DMARC, MTA-STS/TLS, and security headers.
Cybersecurity Scores of Major Tennessee Auto Dealerships
Overall compliance scores from audit.emailmenow.com, measured June 5, 2026. Re-run any domain at the link to verify.
| Rank | Organization | Domain | Overall Score | Performance Level |
|---|---|---|---|---|
| 1 | Crown Automotive | crowncars.com | 72% | Good |
| 2 | Serra Automotive | serraautomotive.com | 44% | Below Average |
| 3 | Grayson Subaru | graysonsubaru.com | 44% | Below Average |
| 4 | Newton Nissan | newtonnissan.com | 38% | Weak |
| 5 | Jim Keras Automotive | jimkeras.com | 38% | Weak |
| 6 | Limbaugh Automotive | limabuickgmc.com | 30% | Weak |
What the Results Reveal
- Scores span 72% down to 30% — 1 of 6 reach a Good (70%+) posture.
- 5 of 6 scored below 60%, leaving stakeholders exposed to phishing and impersonation.
- Weak authentication undermines compliance expectations and increases BEC and wire-fraud risk.
Why This Matters in Tennessee
Tennessee auto dealerships are covered by the FTC Safeguards Rule. Customer finance and lender communications are frequent BEC targets.
See also — national audit
Recommendations
- Enforce DMARC (
p=reject), strict SPF, and DKIM signing. - Add MTA-STS and website security headers.
- Run periodic domain audits and security awareness training.
Check any organization’s posture. Run a free Instant Cybersecurity Audit at audit.emailmenow.com/?industry=auto-dealers.
Contact EmailMeNow IT Consulting for help with email security hardening and compliance documentation.
Source & methodology: Overall compliance scores from the free scan at audit.emailmenow.com, measured June 5, 2026 — each domain checked for email authentication (SPF, DKIM, DMARC), transport security (MTA-STS/TLS), website security headers, and network security. Re-run any domain at the link to verify.