At social gatherings, criminals may use a variety of covert methods to steal personal information from attendees' phones. Here are some common methods: 1. **Fake free Wi-Fi hotspot**: Create a free Wi-Fi network that looks legitimate and tricks attendees into connecting. Once connected, criminals can monitor network traffic and obtain personal information. 2. **Bluetooth attack**: Exploit devices connected via Bluetooth. If Bluetooth is not turned off or the device is not protected, criminals can steal data through Bluetooth connections. 3. **Malicious apps or links**: During social interactions, share apps or links containing malicious code. When attendees click or install them, the malware may begin to steal data. 4. **Social engineering**: Gather information through conversations, or pretend to be technical support staff to trick you into handing over your phone and then installing malware. 5. **Eavesdropping through audio signals**: Use devices to emit audio signals of specific frequencies to induce the phone to respond, thereby intercepting information or obtaining permissions. 6. **Public charging station attack (Juice Jacking)**: Set up fake charging stations and transfer malicious programs to mobile phones through USB ports to access or steal data. 7. **Near Field Communication (NFC) Attack**: In crowded places, use NFC devices to briefly touch the victim's phone to transmit malicious code. To protect personal information, it is recommended to avoid connecting to unknown wireless networks in social gatherings, turn off unnecessary connections (such as Bluetooth and NFC), be cautious when accepting file transfers, and do not click on suspicious links or install unknown applications at will.