The information provided below is intended only to increase awareness of cybersecurity and preventive measures and is not intended to instruct, encourage, or engage in any illegal activity. Understanding these technical strategies will help security professionals, law enforcement agencies, and related practitioners identify and prevent potential threats. The following are some technical strategies or methods that may be abused in the process of illegally obtaining and selling digital information, but they are not exhaustive and should not be used for illegal purposes: 1. Social Engineering Attacks • Phishing and Spear Phishing: Using emails, text messages, or websites disguised as trusted entities to trick targets into revealing account information, passwords, or other sensitive data. • Voice Phishing/“Vishing”: Using phone calls to trick victims into revealing sensitive information. 2. Malware Distribution • Trojans and Backdoors: Installing backdoor programs on infected devices to provide channels for remote access and persistent control, thereby stealing data. • Keyloggers: Recording information entered by users, such as passwords and other sensitive data. • Spyware: Monitoring and recording target activities in the background, capturing login credentials and sensitive data. 3. Exploiting software or system vulnerabilities • Zero-day vulnerability exploitation: Attacks against security vulnerabilities that have not been made public or patched to break through system protection. • SQL injection: Manipulate the database backend by entering malicious code to extract stored sensitive information. • Cross-site scripting (XSS) and file inclusion vulnerabilities: Exploit vulnerabilities in web applications to obtain or tamper with data. 4. Network penetration and traffic eavesdropping • Man-in-the-middle attack (MitM): Intercept and tamper with the content of communication between two parties to obtain sensitive information in transmission. • Wireless network attack: For example, intrusion into an unsecured Wi-Fi network to intercept data packets. 5. Exploiting vulnerable remote access services • Obtaining weak password accounts through brute force or credential reuse attacks to log in to remote desktops, VPNs, or other remote access services. • Exploiting default configurations or unpatched service vulnerabilities to penetrate. 6. Anonymization and hiding traces • Use proxy servers, VPNs, or Tor networks to hide real IP addresses and increase tracking difficulties. • Distributed networks (such as botnets) work together to disperse the source of attacks. 7. Data Outflow and Network Hiding Technology • Encrypted communication: Use encrypted tunnels to transmit stolen data to control servers outside the country to avoid easy monitoring. • Segmented transmission and data segmentation technology: Split large amounts of data into several parts and transmit them through multiple lines or unrelated channels to avoid traffic analysis. 8. Internal Threat Exploitation • Utilize the privileges of company insiders (such as dissatisfied employees or bribed personnel) to directly access data that should be protected. • Abuse legitimate identities or accounts to transition to higher privileges to steal data. It should be noted that the above information is intended to reveal common attack methods and techniques, which will help security prevention and detection. Organizations and individuals should continuously adjust security measures based on these strategies, patch vulnerabilities, and improve security awareness, so as to effectively reduce the risk of network attacks and data leaks. Once again, any use or dissemination of such information for illegal activities is illegal and unacceptable.