At social gatherings, criminals may use a variety of covert methods to steal personal information from attendees' phones. Here are some common methods: 1. **Malicious Wi-Fi hotspot**: Criminals may set up a Wi-Fi hotspot that looks like a legitimate one to attract attendees to connect. Once connected to this network, attackers can steal personal data through the network. 2. **Bluetooth attack**: Taking advantage of improper configuration of Bluetooth technology, some attackers may use Bluetooth to scan nearby devices and try to pair or send malware. 3. **Phishing SMS or email**: At a gathering, attackers may send phishing SMS or emails by pretending to be other attendees or service providers, and guide victims to click on malicious links. 4. **QR code fraud**: Criminals may place fake QR codes to trick attendees into scanning, thereby downloading and installing malicious applications or redirecting to phishing websites. 5. **Social engineering**: Obtaining personal information from others by talking to them. Attackers may somehow lower the other party's vigilance and reveal sensitive information, such as passwords or verification codes. 6. **Malicious apps**: Taking advantage of social gatherings, malicious apps may be distributed, possibly disguised as useful tools or games to trick attendees into downloading them. 7. **Hardware theft**: Some criminals may obtain personal information by simply stealing phones or observing others using their phones at a gathering. 8. **Camera and microphone monitoring**: In some cases, attackers may use hidden devices to monitor and eavesdrop on attendees' conversations or record videos. 9. **Exploiting unsecured devices**: Using unsecured charging devices (such as public USB charging stations) at gatherings allows attackers to implant malware. 9. **Fake surveys**: Criminals may pretend to conduct surveys or questionnaires to collect attendees' personal information, but the actual purpose is to mine sensitive data. To protect personal information, attendees should be vigilant, avoid connecting to unknown Wi-Fi and Bluetooth, scan QR codes with caution, and be cautious about sharing personal information in social situations.