Internet of Things (IoT) has revolutionized the way we interact with our environments, connecting billions of devices to enhance efficiency, convenience, and automation in various sectors such as healthcare, transportation, and smart homes. However, the proliferation of interconnected devices also introduces significant security challenges. IoT devices, often designed with limited computing resources, may lack robust security features, making them vulnerable to cyber-attacks. As IoT continues to expand, discovering and addressing its security vulnerabilities becomes paramount to safeguarding personal privacy and ensuring the resilience of interconnected infrastructures. This project showcase will introduce and demonstrate current capabilities of the OWASP IoT Security Testing Guide (ISTG) project released earlier this year. The ISTG comprises a comprehensive methodology for penetration tests in the IoT field, offering flexibility to adapt innovations, and developments in the IoT market while still ensuring comparability of test results. While the guide is mainly intended to be used by penetration testers, its resources may aid manufacturers and operators of IoT devices to proactively improve the security of their devices. - Managed by the OWASP® Foundation