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GuardSquare

Security · Leuven, Belgium · Founded 2012

GuardSquare is a mobile application security company headquartered in Leuven, Belgium, with offices in the USA and Germany. It was founded in 2014 by Eric Lafortune and Heidi Rakels. The company's origins trace back to 2002 when Lafortune created ProGuard, an open-source Java bytecode optimizer, as a hobby project. ProGuard gained significant traction, and by 2010, it was integrated into the Android SDK. Recognizing the growing demand for more robust mobile security, Lafortune developed DexGuard in 2012, a commercial product for Android offering advanced protection. This led to the official establishment of GuardSquare two years later to support the software's development. GuardSquare provides a suite of security solutions for native and cross-platform mobile applications, serving industries such as finance, e-commerce, gaming, and healthcare. The company's business model is centered on selling software licenses and providing expert support. In January 2019, GuardSquare secured its first institutional funding round of $29 million, led by Battery Ventures. Subsequent investments include an undisclosed amount from Verdane in July 2025. The company has also grown through acquisitions, including App-Ray in 2020 and Verimatrix's Extended Threat Defense (XTD) division in 2026. The product portfolio offers multi-layered security that integrates throughout the software development lifecycle. Key products include: * **DexGuard:** Protects Android applications against reverse engineering and tampering through code hardening, obfuscation, encryption, and Runtime Application Self-Protection (RASP). It is designed to be backward compatible with ProGuard configurations. * **iXGuard:** Provides similar comprehensive protection for iOS applications, defending against both static and dynamic analysis with features like code virtualization, name obfuscation, and runtime integrity checks. * **AppSweep:** A mobile application security testing (MAST) tool that helps developers find and fix security vulnerabilities early in the development process. * **ThreatCast:** A real-time threat monitoring service that gives visibility into active attacks on applications in production. * **ProGuard:** The foundational open-source tool for shrinking, optimizing, and providing basic obfuscation for Java and Kotlin bytecode. Keywords: mobile application security, code hardening, runtime application self-protection, RASP, Android security, iOS security, code obfuscation, reverse engineering protection, application shielding, DexGuard, iXGuard, ProGuard, mobile threat monitoring, security testing, tamper detection, Java optimization, AppSweep, ThreatCast, polymorphic protection, SDK protection, application integrity, mobile payments security, anti-tampering, key extraction prevention, API security, data encryption, fintech security