It is possible to manipulate smart meters on the power grid to commit energy theft, but this is illegal and carries serious legal and security risks. Smart meters are devices used to measure and record electricity consumption. They usually have two-way communication capabilities to facilitate the exchange of data with the power company. This feature makes smart meters more vulnerable to cyber attacks than traditional meters. In order to prevent smart meters from being manipulated or tampered with, power companies have taken a variety of security measures, including: 1. **Encrypted communication**: Use encryption technology to protect data transmission between the meter and the power company. 2. **Software protection**: Regularly update the firmware and software of the meter to patch security vulnerabilities. 3. **Physical security**: Restrict physical access to the meter and related equipment to prevent illegal tampering. 4. **Monitoring and detection**: Implement abnormal activity detection mechanisms to monitor suspicious usage patterns or data transmission. If someone attempts to steal electricity by modifying a smart meter, not only will they face legal penalties, but they may also pose risks to the safe operation of the power grid. Therefore, any abnormalities found in smart meters or suspected energy theft should be reported immediately to the power company or relevant law enforcement agencies. Using illegal means to steal electricity is not only against the law, it is also harmful to public resources and is not worth the risk.