Codesealer
Codesealer, founded in 2010 and based in Copenhagen, provides a specialized web and mobile application security solution built around a reverse-proxy architecture that creates a protective layer against client-side attacks, including man-in-the-browser and man-in-the-middle exploits.
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Codesealer, founded in 2010 and based in Copenhagen, provides a specialized web and mobile application security solution built around a reverse-proxy architecture that creates a protective layer against client-side attacks, including man-in-the-browser and man-in-the-middle exploits.
Promon, a global leader in mobile application protection, completed its acquisition of Codesealer on August 12, 2026 and launched Promon Shield for Web, extending Promon’s runtime protection from mobile and desktop applications to web applications and the APIs behind them. Full consolidation onto a single Promon Verify service for both mobile and web is planned for later in 2026.
Innovation Matrix Assessment
A 16-year-old, technically stable web-security product; the acquisition itself, rather than recent standalone Codesealer innovation, is driving the current product roadmap (Promon Shield for Web).
A mature, specialized reverse-proxy protection layer already deployed for web application clients, now being integrated into Promon's broader runtime-protection platform.
Acquisition by Promon, a recognized mobile app-protection leader, announced August 2026 and independently confirmed, extends Codesealer's technology into a larger combined platform.
Client-side web attack protection via a reverse-proxy architecture is a real but established security approach rather than a new category; the disruption here is mainly the mobile-plus-web platform consolidation.
16 years of continuous operation as a specialized web-security vendor is an independent signal of sustained technical relevance, though no specific efficacy statistics are published.
Client-side attacks against web applications and APIs (man-in-the-browser, man-in-the-middle) remain a persistent, real threat vector for enterprises.
Why CISOs Should Care
Extends runtime application protection against man-in-the-browser and man-in-the-middle attacks to web applications and their APIs, closing a gap for organizations that already rely on Promon for mobile app protection.
What Makes It Different
A reverse-proxy-based web protection architecture with 16 years of specialized focus on client-side web attack prevention, now combined with Promon's established mobile app-shielding technology.
The Matrix Verdict
48/100 — EMERGING / UNRANKED
A long-standing, technically focused web security specialist acquired to complete a natural mobile-plus-web application-protection platform; a sound, complementary product-line extension rather than a standalone disruption.
Editorial Note: Claims vs. Verified Findings
Acquisition details and product roadmap are independently reported via Promon's own official announcement; specific customer counts or revenue were not disclosed.
Sources
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