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      Posts by Samuel Hopstock - Software Engineer

      Verifying OS Integrity with Hardware-Backed Key Attestation

      7 minute read | February 11, 2025

      In an age where mobile apps hold extensive sensitive data, securing the environment in which these apps operate is critical. Mobile app security encompasses multiple layers of protection, and one crucial aspect of the security is ensuring that the...

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        About Samuel Hopstock - Software Engineer

        13 min read | November 15, 2022

        Call Graphs: The Bread and Butter of Program Analysis

        Android Technical Dexguard ProGuard & R8
        21 min read | May 10, 2022

        Who You Gonna Call? Behind the Scenes of JVM Method Invocations

        Android Technical Dexguard ProGuard & R8
        19 min read | January 18, 2022

        How to Securely Implement TLS Certificate Checking in Android Apps

        Android Technical Protection Dexguard
        15 min read | December 21, 2021

        Insecure TLS Certificate Checking in Android Apps

        Android Technical Protection Dexguard
        Improve Your Mobile App Security in Less Than 5 Minutes https://www.guardsquare.com/blog/improve-mobile-app-security
        Call Graphs: The Bread and Butter of Program Analysis https://www.guardsquare.com/blog/call-graphs-the-bread-and-butter-of-program-analysis
        Who You Gonna Call? Behind the Scenes of JVM Method Invocations https://www.guardsquare.com/blog/behind-the-scenes-of-jvm-method-invocations
        How to Securely Implement TLS Certificate Checking in Android Apps https://www.guardsquare.com/blog/how-to-securely-implement-tls-certificate-checking-in-android-apps
        Insecure TLS Certificate Checking in Android Apps https://www.guardsquare.com/blog/insecure-tls-certificate-checking-in-android-apps