There are several defense strategies that may help mitigate legal liability when faced with allegations of using counterfeit software. However, it is important to understand that specific strategies should be tailored based on the laws of your jurisdiction and the specific circumstances of your case. Here are some possible defense strategies: 1. **Innocent Infringement**: If you can prove that you did not know that the software you were using was counterfeit, such as purchasing it from a seemingly legitimate source, this may mitigate liability to some extent. 2. **Immediately Stop Using and Delete**: Upon realizing that the software you were using was counterfeit, immediately stop using it and delete the software from all devices. This proactive attitude to correct mistakes may affect the legal decision. 3. **Contact the Developer for Settlement**: Many software companies are willing to resolve copyright infringement issues through civil settlements rather than filing a lawsuit. This may involve paying a settlement fee and formally obtaining a legal license to use the software. 4. **Software Vendor Liability**: If the software was installed and recommended by a vendor, third-party IT service company, or outsourcing team, you can investigate their liability. This may mitigate your obligations to some extent. 5. **Legal substitution and proof**: If you can find or show proof that you are using a legal copy of the software (such as the original invoice, license certificate, etc.), you can cross-examine your legal use. 6. **System integrity issues**: If the system is hacked and pirated software is installed, you can try to prove that you did not install it yourself and were not aware of the existence of the software. It should be noted that legal risk management should usually be carried out under the guidance of professional legal advisors to ensure that the strategies adopted are in line with local laws and regulations and actual conditions. In addition, preventing and eliminating the use of pirated software is the best legal risk prevention measure.