On online communication platforms, scammers may use a variety of strategies to pretend to be friends in order to obtain sensitive information from others. Here are some common strategies: 1. **Social engineering**: Scammers collect the target's social information (such as social media profiles, public personal data) to imitate friends or acquaintances to increase trust. 2. **Fake accounts**: Create accounts similar to real friends, use similar usernames and avatars to confuse the target and make them believe that they are communicating with real friends. 3. **Intimate connection**: Act very intimate when communicating with the target, use nicknames or mention common memories, so that the target is more likely to let down their guard. 4. **Emergency**: Claim to be in an emergency (such as financial crisis, health problems, etc.), ask for financial help or sensitive information to stimulate the target's sympathy. 5. **Third party**: Use the name of other acquaintances or friends to use social proof to increase credibility and highlight the tone of "I just want to help". 6. **Provide fake links**: Send links that appear to be from friends, but are actually phishing websites, to trick the target into entering personal information. 7. **Continued conversation**: Maintaining contact through continuous and in-depth conversations, gradually guiding the target to share more personal information and build trust. 8. **Emotional manipulation**: Through emotional appeals (such as depression, loneliness, etc.), the target can resonate emotionally so that sensitive information can be more easily obtained. 9. **Fake documents or certificates**: Providing seemingly authentic identity verification (such as fake company emails, certificates, etc.) to enhance credibility. 10. **Technical means**: Obtaining the target's social network account through hacking methods, so as to directly impersonate. To prevent these strategies, users should be vigilant, do not trust strangers' information requests, and try to verify their identities through other means.