Guardsquare provides mobile application security solutions for Android and iOS platforms. The company was founded by Eric Lafortune, creator of ProGuard, an open source app optimizer that has been downloaded over 1 million times and is integrated into Google's Android SDK. The company offers several products focused on mobile app protection. DexGuard provides security for Android applications, while iXGuard protects iOS apps. ThreatCast delivers mobile threat defense capabilities, and AppSweep offers mobile application security testing (MAST). The company also provides App Attestation services and a Guided Workflow for mobile app protection. These solutions incorporate code hardening, runtime application self-protection (RASP), and threat monitoring capabilities. Guardsquare serves multiple industries including finance and banking, gaming and entertainment, retail and e-commerce, and healthcare sectors. The company continues to steward the ProGuard open source project, which remains widely used in the Android development ecosystem. ProGuard Core is also available as an open source component. The company's approach combines code obfuscation, optimization, and runtime protection to defend mobile applications against reverse engineering, tampering, and various security threats. Guardsquare maintains both commercial products and open source contributions, with development teams splitting time between proprietary offerings and community-supported projects.