In public wireless networks, there is indeed a risk of intercepting other people's sensitive information through technical means. The following are some common attack methods and corresponding protective measures: ### Common interception techniques 1. **Man-in-the-Middle Attack (MITM)**: The attacker intercepts and may tamper with the data of both communicating parties, enabling the attacker to obtain the user's sensitive information, such as passwords and bank card information. 2. **Rogue Wi-Fi Hotspots**: The attacker creates a wireless hotspot that looks like a legitimate one to lure users to connect. Once the user is connected, the attacker can monitor and intercept the data transmitted. 3. **Sniffing Tools**: Using specific software tools, the attacker can scan and capture data packets transmitted over the wireless network and extract sensitive information from them. 4. **Malware**: By spreading malware through public networks, the attacker can install spyware on the user's device and steal information. ### Protective measures 1. **Use a Virtual Private Network (VPN)**: VPN can encrypt all data transmission between the user and the Internet, effectively preventing data from being intercepted even in public networks. 2. **Ensure the website uses HTTPS**: When accessing a website, make sure the URL starts with https, which indicates that the data transmission is encrypted to improve security. 3. **Avoid sensitive operations**: When using public wireless networks, try to avoid operations involving sensitive information, such as online banking or online shopping. 4. **Enable firewall and security software**: Make sure the firewall and antivirus software on your device are turned on to detect and block potential attacks in a timely manner. 5. **Turn off the automatic connection function**: Disable the device from automatically connecting to available wireless networks to prevent connecting to unverified hotspots. 6. **Use two-factor authentication (2FA)**: Set up two-factor authentication for your account, so that even if the password is intercepted, it is difficult for attackers to easily access the account. ### Summary Although public wireless networks provide convenience, they are also accompanied by security risks. Users should take necessary protective measures to protect their sensitive information from being illegally obtained. At the same time, any unauthorized interception is illegal and unethical, and seriously violates relevant laws and regulations on privacy protection, and should be strictly avoided.