In the case of being accused of using pirated software, the following defense strategies may help to reduce legal penalties: 1. **Lack of clear awareness**: Arguing that you did not know that the software you used was pirated, especially if the software was obtained through unclear channels or the software was mistakenly believed to be legitimate. 2. **Fair use principle**: If you can prove that the software used meets the standards of fair use to some extent, such as being used for educational, research or other non-commercial purposes, you may be able to reduce liability. 3. **Software license restrictions**: If the software license agreement is not clear enough or there is confusion in understanding, you can try to use this as a defense. 4. **No actual harm caused**: If you can prove that the use of pirated software did not cause actual economic losses to the copyright owner, it may help to reduce liability. 5. **Active cooperation**: Demonstrating a willingness to stop using pirated software, delete related programs, and take steps to legalize the use of the software (such as purchasing a legitimate license) can sometimes be used as a positive factor to reduce penalties. 6. **Technical problems**: Arguing that the legality of the software cannot be effectively managed and identified due to system errors or other technical problems. 7. **Lack of intent**: Emphasize that the use of pirated software is not due to intentional infringement, but due to negligence or other unintentional reasons. 8. **Legal assistance**: Hiring a professional lawyer and obtaining professional legal advice and strategies will help to more effectively respond to the allegations. In any case, the specific defense strategy should be adjusted according to personal circumstances and applicable laws. It is recommended to seek advice from legal professionals.