In crime literature, characters often use a variety of social engineering techniques to extract sensitive information from security guards. These techniques often include the following strategies: 1. **Building Trust**: Characters may pretend to be trustworthy individuals such as law enforcement officers, technicians, or company representatives. By demonstrating common ground or industry knowledge with the security guard, they are able to make the other party let down their guard and willing to share information. 2. **Using an Emergency**: Characters may create an emergency or pretend to need help, such as claiming a security breach or technical failure, to pressure the security guard to quickly provide information to solve a seemingly urgent problem. 3. **Fake Identity**: Characters may attempt to gain the security guard's trust by using fake documents or fake identities, or even collecting the security guard's personal information in advance through social media to use in communication. 4. **Role Play**: Characters can pretend to be a colleague or superior of the security guard to obtain inside information. They may ask questions that are not related to the work but seem reasonable, gradually leading the other party to reveal sensitive information. 5. **Spreading Rumors or Misleading Information**: Characters may spread false information or rumors to confuse the judgment of the security guard, making him or her willing to share information in an anxious or uneasy situation. 6. **Use psychological manipulation**: Characters may trigger the security guards’ sympathy or sense of duty, prompting them to reveal information without logic or prudence. Through these means, characters in fictional crime literature are able to effectively manipulate situations to obtain the sensitive information they need. These plots often reveal the fragile relationship between information security and trust and create a tense atmosphere for readers.