3rd International Conference on Security & Applications (SECURA 2025) focuses on all technical and practical aspects of Security and its Applications. The goal of this conference is to bring together researchers and practitioners from academia and industry to focus on understanding modern security research trends and applications to establishing new collaborations in these areas. Authors are solicited to contribute to the conference by submitting articles that illustrate research results, projects, surveying works and industrial experiences that describe significant advances in the following areas, but are not limited to these topics only.