efemex
Secure Mail
Compose
FL
f.lackey@briskhaven.com
Subject
From
Date
Q1 Security Audit — Final Report and Remediation Timeline
R. Holmes
10:42 AM
Data center failover test — East Coast facility results
M. Torres
9:15 AM
NIST SP 800-171 compliance gap analysis — action items
D. Lawrence
8:03 AM
Re: TLS certificate rotation schedule for March
L. Rodriguez
Yesterday
DMARC enforcement update — reject policy rollout
S. Patel
Yesterday
SOC 2 Type II — evidence collection deadline reminder
Compliance
Mar 15
Re: Sovereign infrastructure — dedicated tenant isolation proposal
K. Chen
Mar 14
Penetration test results — external assessment summary
Security Team
Mar 13
FedRAMP authorization package — documentation review
J. Mitchell
Mar 12
Weekly infrastructure monitoring report — Week 11
ops@efemex.com
Mar 11
Re: Zero-knowledge encryption — key management procedures
A. Gupta
Mar 10

Q1 Security Audit — Final Report and Remediation Timeline

From Richard Holmes <r.holmes@efemex.com> To f.lackey@briskhaven.com CC d.lawrence@efemex.com, security@efemex.com Date March 18, 2026 at 10:42 AM EST

Fred,

The Q1 external security audit has concluded. Attached is the final report from our third-party assessor. I want to highlight a few key findings and the remediation timeline we've committed to.

Overall posture remains strong. The assessment confirmed full compliance with our NIST SP 800-171 control baseline, and no critical vulnerabilities were identified across the production mail infrastructure. Two moderate findings were flagged:

1. Certificate pinning validation on secondary MX failover nodes — The assessor noted that while primary nodes enforce strict certificate pinning, the failover configuration allows a broader certificate chain. We've already scoped the remediation and expect to have hardened failover pinning deployed by March 28.

2. Audit log retention on the East Coast facility — Current retention is 180 days. The assessor recommended extending to 365 days to align with our FedRAMP moderate baseline. Storage provisioning is underway; target completion is April 5.

Neither finding represents an active risk vector. Both are hardening improvements that strengthen our already-robust security posture. The full remediation plan is detailed in Section 4 of the attached report.

I'd like to schedule a 30-minute review to walk through the findings with you and Doug. Would Thursday at 2 PM EST work for your schedule?

Regards,
Richard Holmes
Director of Security Operations
FMX LLC

Attachments (1)
FMX-Q1-2026-Security-Audit-Report.pdf 284 KB