In social gatherings, criminals may use various hidden methods to steal the personal information of participants. The following are some common strategies and precautions： ### 1. **Public Wi-Fi network** -**Method**: Criminals may set up a seemingly legitimate public Wi-Fi network to trick participants into connecting. Once connected, they can intercept data traffic and steal sensitive information. -**Precautions**: Avoid connecting to unfamiliar Wi-Fi networks, use virtual private networks (VPNs) to encrypt data, or only use mobile data networks. ### 2. **Bluetooth attack** -**Method**: Through a Bluetooth connection, criminals can try to pair with nearby devices to gain access or spread malware. -**Precautions**: Turn off the Bluetooth function when not needed, set the device to “undiscoverable” mode, and reject pairing requests from unknown devices. ### 3. **Malicious applications** -**Method**: Criminals may use social engineering methods to induce participants to download malicious applications, which may steal personal information or monitor device activities. -**Precautions**: Only download apps from the official app store, read permission requests carefully, and check installed apps regularly. ### 4. **Physical contact** -**Method**: Criminals may approach participants in gatherings and use brief physical contact to install malicious software or steal equipment. -**Preventive measures**: Keep the device within sight, set a strong password or biometric lock, and enable the device tracking function. ### 5. **Social engineering** -**Method**: By pretending to be a trusted person or organization, criminals may induce participants to disclose personal information or click on malicious links. -**Preventive measures**: Be vigilant to requests from unknown sources, verify the authenticity of information, and avoid discussing sensitive information in public. ### 6. **USB charging station** -**Method**: Criminals may implant malicious hardware in public charging stations, steal data or install malicious software through USB connections. -**Precautions**: Use your own charger or power bank, avoid using unknown USB ports, or use a USB data cable for power only. ### 7. **QR code fraud** -**Method**: Criminals may distribute seemingly legal QR codes to trick participants into scanning, thereby guiding them to visit malicious websites or download malicious software. -**Precautions**: Only scan QR codes from trusted sources and use a secure application to verify the content of the QR code. ### 8. **Voice assistant attack** -**Method**: Criminals may use the function of voice assistants to remotely control devices or steal information through voice commands. -**Precautions**: Disable the voice assistant or set the voice recognition lock to avoid using voice commands in public. ### 9. **SIM card exchange** -**Method**: Criminals may obtain the personal information of participants through social engineering means, and then carry out SIM card exchange attacks to take over mobile phone numbers. -**Preventive measures**: Enable the SIM card locking function, check account activity regularly, and set up additional security measures with the operator. ### 10. **Short-range wireless communication (NFC) attack** -**Method**: Through NFC technology, criminals can steal information from the device or make unauthorized payments at close range. -**Precautions**: Turn off the NFC function when not needed and use a wallet or mobile phone case with RFID shielding function. ### Summary In social gatherings, staying vigilant and taking appropriate precautions are the key to protecting the security of personal information. By understanding these potential threats, participants can better protect themselves from criminals.