Abusing network resources to obtain private information is a violation of copyright and illegal. Here are some techniques that may be abused: 1. **Phishing**: Using emails, text messages or websites that pretend to be legitimate entities (such as banks, online services, etc.) to trick users into providing sensitive information, such as passwords, credit card numbers, etc. 2. **Malware**: This includes keyloggers, spyware, Trojans, etc., which can be secretly installed on the victim's device to steal sensitive information. 3. **Social Engineering**: Obtaining private information by deceiving, manipulating or influencing people, such as pretending to be a friend or colleague to conduct social engineering attacks. 4. **Data Scraping**: Large-scale crawling of public data on public social media and other online platforms to analyze and potentially reconstruct details of a person's private life. 5. **Wi-Fi Eavesdropping**: Intercepting and monitoring network traffic on public or unsecured Wi-Fi networks, which may obtain unencrypted personal information. 6. **Unauthorized Database Access**: Attacking databases through vulnerabilities or cracking techniques to steal data containing private information. 7. **SIM Card Swapping**: Attackers obtain the victim's phone number and other access to bound services by pretending to be the victim and communicating with telecom customer service. 8. **Public information analysis**: By analyzing public records released by governments, enterprises, or organizations, private information background is assembled. These behaviors are not only unethical, but also illegal in most countries. Protecting personal privacy and data information security is a matter that every Internet user should pay attention to. Victims should promptly report to the police and consult professional organizations for help.