An independent cybersecurity review across major Missouri law firms 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 Missouri Law Firms
Overall compliance scores from audit.emailmenow.com, measured June 5, 2026. Re-run any domain at the link to verify.
| Rank | Law Firm | Overall Score | Performance |
|---|---|---|---|
| 1 | Husch Blackwell | 78% | Good |
| 2 | Spencer Fane | 64% | Above Average |
| 3 | Bryan Cave Leighton Paisner | 62% | Above Average |
| 4 | Sandberg Phoenix | 60% | Above Average |
| 5 | Shook Hardy & Bacon | 54% | Average |
| 6 | Thompson Coburn | 54% | Average |
| 7 | Lathrop GPM | 52% | Average |
| 8 | Polsinelli | 48% | Below Average |
| 9 | Armstrong Teasdale | 44% | Below Average |
| 10 | Brown & Crouppen | 38% | Weak |
What the Results Reveal
- Best performer: Husch Blackwell leads at 78% — 1 firm(s) reach a Good (70%+) posture.
- Lowest performer: Brown & Crouppen at 38%.
- 6 of 10 scored below 60%, leaving client communications exposed to spoofing and BEC.
- Common gaps include weak DMARC enforcement and missing MTA-STS.
Why This Matters in Missouri
Missouri law firms handle privileged client information across corporate, litigation, and regulatory matters. Weak email security increases Business Email Compromise, domain spoofing, and confidentiality risks under the Missouri Rules of Professional Conduct.
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=law-firms.
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.