In the supply chain, thieves may use a variety of methods to steal goods in transit without being detected. Here are some common theft methods: 1. **Forged documents**: Thieves may forge bills of lading or other shipping documents in order to pick up goods without arousing suspicion. 2. **Inside coordination**: Colluding with internal employees, such as warehouse workers, drivers, etc., so that they can more easily obtain information about the goods and find the right time to steal. 3. **Fake identity**: Impersonating a legitimate carrier or consignee with a fake identity to gain access to the goods. 4. **Technical means**: Using technical means to interfere with or circumvent GPS tracking systems so that the location of the goods cannot be accurately tracked. 5. **Force or threat**: Intercepting vehicles in transit and forcing or threatening the driver to hand over the goods. 6. **Carriage damage**: Entering the cargo storage area by breaking the locks of truck compartments or containers during transportation. 7. **Switching goods**: Switching goods in transit, stealing part of the goods and replacing them with counterfeit or worthless items. 8. **Manufactured accidents**: Deliberately creating traffic accidents or other unexpected events as a cover to steal goods in the chaos. To prevent these theft methods, companies can strengthen security training, adopt high-tech tracking and monitoring equipment, strengthen monitoring and verification procedures during transportation, and improve personnel screening and background check standards.