On online communication platforms, some criminals may use a variety of strategies to pretend to be friends in order to defraud others of sensitive information. Here are some common strategies: 1. **Building trust**: Criminals will often spend time talking to their targets for a long time to build a trusting relationship. They may share some innocuous personal information with their targets to make themselves seem more real. 2. **Impersonating an acquaintance**: They may pretend to be an acquaintance, colleague, or mutual friend of the target, using the background information they have to make themselves seem credible. 3. **Exploiting emotions**: By showing care and understanding, criminals try to make the target feel that they are a real friend, making it easier to share private information. They may pay attention to the emotional needs of the target and pretend to be a supporter. 4. **Creating a sense of urgency**: The perpetrators may create a sense of urgency or emergency, urging the target to immediately provide sensitive information, such as account passwords or ID numbers, in order to "solve the problem." 5. **Giving away fake rewards**: Pretending to be a friend who offers discounts or prizes, criminals will ask the target to provide personal information in order to receive the so-called reward. 6. **Social Engineering**: Using social engineering techniques to obtain important information that can help guess passwords, such as birthdays, pet names, etc. through simple questions. 7. **Guided Sharing**: Through clever topic design, guide the target to share sensitive information, such as using chat games or quizzes. 8. **Multiple Accounts**: Create multiple fake accounts and pretend to have multiple mutual friends with the target to increase credibility. The best way to prevent this type of scam is to be cautious about sharing personal information and verify whether the person behind all requests is real and reliable.