An independent cybersecurity review across many of Texas’s largest banks reveals a wide range of results. These institutions hold customers’ deposits and financial data, yet many show meaningful gaps in basic email authentication.
Using data from audit.emailmenow.com, we evaluated each bank’s domain across email, website, and network security — including SPF, DKIM, DMARC, MTA-STS/TLS, and security headers.
Cybersecurity Scores of Major Texas Banks
Overall compliance scores from audit.emailmenow.com. Re-run any domain at the link to verify.
| Rank | Bank | Domain | Overall Score | Performance Level |
|---|---|---|---|---|
| 1 | Southside Bank | southside.com | 85% | Strong |
| 2 | Texas Capital Bank | texascapitalbank.com | 84% | Strong |
| 3 | Broadway Bank | broadway.bank | 80% | Strong |
| 4 | Happy State Bank | happybank.com | 70% | Strong |
| 5 | First Financial Bank | ffin.com | 68% | Good |
| 6 | Independent Financial | ifinancial.com | 64% | Good |
| 7 | PlainsCapital Bank | plainscapital.com | 62% | Above Average |
| 8 | American National Bank of Texas | anbtx.com | 60% | Above Average |
| 9 | Frost Bank | frostbank.com | 54% | Average |
| 10 | Prosperity Bank | prosperitybankusa.com | 53% | Below Average |
| 11 | Veritex Community Bank | veritexbank.com | 41% | Weakest |
| 12 | Comerica | comerica.com | 38% | Weakest |
What the Results Reveal
- Scores range from 85% (Southside) down to 38% (Comerica) — four Texas banks reach a strong (70%+) posture, led by Southside, Texas Capital (84%), and Broadway (80%).
- The biggest household names do not lead: Frost (54%), Prosperity (53%), and Comerica (38%) all trail smaller regional banks on basic email authentication.
- Without an enforced DMARC policy, criminals can spoof the bank’s own domain to phish customers or to send fraudulent “wire update” instructions to commercial clients.
Why This Matters for Banks
Banks are bound by the GLBA Safeguards Rule, FFIEC examination guidance, and FDIC/OCC/state oversight. Email authentication (SPF, DKIM, and an enforced DMARC policy) is the single highest-impact control against the business email compromise (BEC) and wire fraud that target bank customers and commercial accounts.
Check any bank’s posture at audit.emailmenow.com/?industry=financial-advisors.
See also — national audit
Recommendations
- Enforce DMARC (
p=reject), strict SPF (-all), and DKIM signing. - Add MTA-STS and website security headers.
- Adopt verified call-back procedures for any change to wiring instructions, and train customer-facing and commercial staff.
Stop fraud before it starts. Run a free Instant Cybersecurity Audit at audit.emailmenow.com/?industry=financial-advisors.
Contact EmailMeNow IT Consulting for help with GLBA-aligned email security hardening.
Source & methodology: Overall compliance scores from the free scan at audit.emailmenow.com — 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.