A speaker examines in detail the core problems of Mobile App Security subject by applying philosophical methods to avoid technical biases. Among these problems, the speaker distinguishes the following topics: - the engineering bias (streetlight effect) causing engenders to propose solutions for security problems that are "comfortable to solve or they have the technology to apply." - the ambivalence of perception of security by engineers and users. Users welcome individual safety feelings and can be irritated by security measures. I.e., the Security and Freedom dilemma defines individual user safety perception. - Complexity of managing Social Contracts in the Apps world for users. Related to Privacy, Personal Data Processing, Surveillance, ... - The challenge to make the security level of the App verifiable by users. How to make the security visual and clear for users. - Problems of engaging users in the security journey without boring and annoying. - How to approach the collective defense concept to share the attack vectors' data and use the exploits to improve the defense.