When plans are accidentally leaked to non-relevant personnel during a military exercise, immediate measures should be taken to reduce security risks. Here are some possible steps: 1. **Immediate Report**: Report the leak to your superior or designated security department as soon as possible to obtain specific instructions and support. 2. **Assess the Impact**: Quickly assess the sensitivity and potential impact of the leaked information, including the scope of impact and possible security risks. 3. **Limit the spread**: Take measures to prevent the further spread of the leaked information, such as requiring non-relevant personnel who received the information to delete or stop disseminating relevant information. 4. **Modify the Plan**: If possible, adjust or modify the exercise plan, change key details such as time, location or participants to reduce the value of the leaked information. 5. **Information Control**: Strengthen the control of relevant information and the management of dissemination channels to ensure that only authorized personnel can access sensitive information. 6. **Training and Education**: Provide information security education to relevant personnel after the incident, emphasize the importance of confidentiality, and guide how to properly handle sensitive information. 7. **Audit and Monitoring**: Conduct a thorough investigation of the leak, find out the cause of the leak and record the process, and monitor the dissemination of information and access rights. 8. **Improve security measures**: Based on the results of the incident assessment, improve existing information security measures and protocols to prevent similar incidents in the future. 9. **Psychological warfare techniques**: If the leaked information has been obtained by the hostile party, use psychological warfare or misleading strategies to make the hostile party doubt the credibility of the information. Taking the above measures can help reduce the negative impact of the leak incident and strengthen future information security management.