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How I discovered my email security provider was missing advanced threats – and what I did about it

Why Even “Good” Email Security Can Miss Threats

Email security can miss threats if it lacks AI analysis, deep scanning, or updated rules. Run simulations and audits to spot blind spots.

The Shocking Audit Discovery

I always assumed our email security provider had us fully covered. Then, during a routine audit, we found 12 malicious emails sitting quietly in user inboxes. They were from fresh domains, written by AI, and passed through without any alert.

The Hidden Weaknesses in Our Provider’s System

The issue? Our provider wasn’t scanning certain file types or calendar invites deeply enough. It also lacked the AI-based analysis needed to flag unusual, human-like messages. These blind spots are more common than most businesses realize.

The Fix: A Multi-Layered Security Approach

Here’s what fixed it:

  • Monthly phishing simulations
  • Enabling scanning for all message types, including internal mail
  • Adding an independent second layer of protection
  • Weekly log reviews
  • Pushing the vendor for transparent detection reporting

Why You Should Test Your Email Security Now

If you’ve never tested your current system, you might be missing far more than you realize. We can run a missed-threat audit in minutes and show you exactly what’s slipping through.

Request a demo today!
Mark Liapustin
Mark Liapustin
Chief Information Security Officer (CISO)

As CISO at Trustifi, leads the Email Managed Detection and Response (EMDR) Team, delivering cutting-edge email security solutions to clients worldwide. With years of expertise in Web Application and Email Security, brings deep technical knowledge and strategic foresight to the fight against evolving email threats. Focused on innovation and excellence, drives the development of advanced security solutions while ensuring Trustifi remains at the forefront of email security technology.

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