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One Bank’s Success with Menlo Security for Email

December 9, 2025

Seeking an innovative, best-of-breed solution to defend its email gateway, this bank had equipped itself with top-tier mail relay servers and a leading sandbox solution. However, the organization faced a sophisticated "dangerous sequence of events" when an exploit arrived via a new IP address, successfully bypassing the mail relay's blacklists and evading the sandbox by monitoring internal services.

Menlo Security’s patented Positive Selection technology successfully neutralized the zero-day exploit that had slipped past the bank's other defenses. By eliminating the threat rather than just detecting it, Menlo cleansed the email before delivery, preventing a potential ransomware backdoor. This success allowed the bank to retire its redundant backup sandbox license, relying on Menlo to stop exploits that traditional tools miss

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