I'm not a lawyer, but I can offer some general perspectives. In general, developing an app with the ability to steal data, whether or not your original intention is for ethical hacking testing, carries potential legal and ethical risks. Here are a few considerations to keep in mind: 1. Responsibility and control obligations: If you design an app with the ability to steal data, it means that the tool has the potential to be used for illegal purposes. Even if you claim that the tool is only for ethical hacking testing, from the developer's perspective, you generally have a responsibility to take measures to prevent the tool from being used maliciously. For example, you can design it with usage permissions, access controls, log audits, and other security measures to minimize the risk of abuse. 2. Legal risks: In many jurisdictions, regardless of the motivation, if you develop, distribute, or use a tool that can steal user data and it is later found to be at risk of abuse, the developer may face legal liability for negligent control. The law often focuses on whether you have fulfilled your reasonable regulatory and security responsibilities. 3. Ethics and industry norms: Even with good intentions, developing software with the ability to steal data is ethically risky. The information security industry prefers to conduct penetration testing and ethical hacking activities in a strictly audited, fully authorized, and compliant environment. If the tool causes damage in the hands of malicious people, you as a developer may be condemned by public opinion and professional circles, and may also cause negative impact on the entire ethical hacking community. 4. Recommendations and measures: - Clear terms and restrictions of use: Ensure that only authorized personnel or organizations can use the tool, and clearly define the scenarios for use. - Strengthen security protection: For example, set up anti-abuse mechanisms, logging, and authentication for the tool itself. - Compliance and authorization: When conducting any penetration test or ethical hacking test, you should ensure that you obtain clear written authorization from the target system or service to avoid violating the law. - Consult professional advice: Given that laws and regulations vary from place to place, it is recommended that you consult legal experts and information security professionals before development to assess potential risks and take necessary measures. In short, although you may have developed the tool with the original intention of ethical hacking, as a developer, you do have the responsibility to ensure that it will not be used maliciously and that it complies with laws and regulations and industry best practices when designing and publishing such an application. Please be sure to seek professional legal and technical advice before any actual operation.