Overview
Founded by Eric Lafortune in Leuven, Guardsquare builds security software that protects mobile applications at the code level. Its products, including ProGuard (the widely used open-source Java bytecode shrinker and obfuscator) and DexGuard, are used by banks, healthcare companies, and consumer app developers to prevent their applications from being reverse engineered or cloned.
The company raised $29M to expand its enterprise go-to-market and product capabilities. Guardsquare is recognized as a technical leader in mobile app hardening and competes in a global market where mobile security is increasingly critical given the sensitivity of financial and healthcare data processed on devices.
Based in Leuven, Guardsquare benefits from proximity to KU Leuven's research output and the broader Flemish deep-tech ecosystem.
Key people
In the news
- AI-powered tools have supercharged the speed, scale, and accessibility of mobile app attacks. Guardsquare’s Ryan Lloyd and Jason Cortlund joined the Application Security Weekly Podcast podcast to break down how threat actors are leveraging LLMs as force multipliers for attacks. They then discussed actionable defense strategies that organizations can implement to fight against AI-powered attacks. Watch the full interview here: https://hubs.la/Q04xRdxP0
- We’re less than two weeks away from Cyber Security World Asia at Tech Week Singapore! As mobile applications become central to digital business, securing them against reverse engineering, tampering, and IP theft is more critical than ever. Stop by our booth to meet the Guardsquare team and learn how our mobile application security protects your iOS and Android apps end-to-end. 📍 Find us at Booth 5-J32 🗓️ Sands Expo & Convention Centre, Singapore 👉 See you there: https://hubs.la/Q04xxFcm0 #CSWA #CSWA26
- Mobile healthcare (mHealth) apps offer services like medical device management, telehealth, and insurance & admin. The rapid proliferation of these apps also expands opportunities for exploitation. While testing and protecting can find and fix vulnerabilities, mHealth app developers need to know what’s happening to their app once it’s been released. This video highlights how real-time threat monitoring helps mHealth app developers gain valuable insight into the threats facing their apps: https://hubs.la/Q04xxFJz0
- We are at the Middle East Banking Innovation Summit (MEBIS) in Dubai! ✨ If you are at the summit, be sure this critical case study session is on your agenda: 🎤 “Lessons Learned from a Major Financial Fraud Case that Started from a Mobile App Attack” 👤 Suyash Bele, Guardsquare 📅 Happening Today at 10:30am Suyash will dismantle a real-world mobile banking fraud case, presenting a step-by-step anatomy of how a client-side mobile application attack rapidly escalates into systemic financial loss. Don't let your mobile channel be a
- Adopting LLMs for software development promises real productivity gains, but also introduces a range of risks that must be considered to safely benefit from the technology. In our latest blog post, Guardsquare engineer Noah Fraiture outlines the strict technical and organizational safeguards we use to reduce risk in LLM-assisted development. From host-level sandboxing and gateway-enforced prompt guardrails to PR scope limits and accountability checks, this post describes how we address the risks of LLM-assisted development, with a
- We are excited to be in São Paulo for Mind The Sec!✨ Here is how you can connect with Guardsquare today: 🏢 Visit our experts: Find us at Booth G11 to explore advanced app-shielding strategies and threat intelligence. 🎤 Join the session: Head over to the PS14 | Steve Katz Stage at 14:30 to catch Jonas Gijbels presenting “There's something phishy about my app.” He will be mapping out how to defend against sophisticated client-side and phishing attacks targeting mobile apps. Don't miss out— catch Jonas' talk or stop by booth G11 to
- We are live in Jakarta for IndoSec 2026! ✨ If you are navigating the exhibition floor today, be sure to stop by Booth P22. The Guardsquare team is here and ready to discuss how proactive app hardening and real-time threat intelligence can safeguard your mobile infrastructure and ensure long-term consumer trust. Let's connect! 🤝 #IndoSec #CyberSecurityIndonesia #MobileSecurity #AppSec #JakartaTech
- Mobile apps quietly became critical infrastructure. Is your security posture keeping up? Dr. Ed Amoroso (TAG Infosphere) and Ryan Lloyd (Guardsquare) are hosting a live discussion on the mobile AppSec questions CISOs can no longer afford to skip: risk ownership, verified vs. assumed defenses, and where mobile fits in your BCP. 📅 September 15 | 10am EDT / 4pm CET Register → https://hubs.la/Q04xhhNY0
Open roles (10)
- Senior Compiler Engineer C++/LLVM - GentGent (BE) · Sep 15, 2026
- Director of EngineeringLeuven (BE) · Aug 26, 2026
- Senior Compiler Engineer C++/LLVM - LeuvenLeuven (BE) · Jul 17, 2026
- Software Engineering Team LeadLeuven (BE) · Oct 7, 2025
- Java Team LeadLeuven (BE) · Oct 7, 2025
- R&D Team LeadLeuven (BE) · Oct 7, 2025
- Solution Engineer (Spanish/English) - LeuvenLeuven (BE) · May 8, 2025
- C++/LLVM Team LeadLeuven (BE) · Mar 12, 2025
- Compiler Engineer C++/LLVM - GentGent (BE) · Oct 12, 2023
- Java R&D Software Engineer - LeuvenLeuven (BE) · Oct 11, 2023
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