There are indeed some security risks in public wireless networks, where attackers can use technical means to intercept other people's sensitive information, such as passwords or bank card information. Here are some common attack methods: 1. **Man-in-the-middle attack (MITM)**: Attackers can intercept and tamper with the communication between users and the network by acting as a middleman in the network. The information submitted by users on the network may be obtained by the attacker. 2. **Traffic sniffing**: Attackers can use network sniffing tools to capture network data traffic, especially in unencrypted network communications, so that sensitive information may be snooped. 3. **Malicious hotspot**: Attackers may set up a malicious Wi-Fi hotspot disguised as a legitimate public network. Once users connect, the attackers will be able to monitor their network activities. 4. **Malware and Trojans**: Users may accidentally download malware on public networks, which can steal sensitive information and send it to attackers. To protect their information security, users should take corresponding security measures, such as: - Use VPN to encrypt communications. - Try to avoid performing sensitive operations such as online banking on public Wi-Fi networks. - Make sure to use HTTPS encrypted connections to access websites. - Regularly update devices and applications to patch known security vulnerabilities. - Use strong passwords and two-step verification to enhance account security. In summary, there is a real risk of sensitive information being intercepted on public wireless networks, and users should remain vigilant and take necessary security measures.