Is it illegal to sell qq group monitoring software? Is it safe?

There is a risk of illegal behavior in selling monitoring software. Monitoring software usually infringes on others' privacy rights and laws and regulations on personal information protection. According to the laws of different countries and regions, manufacturing, selling or using monitoring software may constitute an illegal act, involving crimes such as invasion of privacy and illegal eavesdropping. At the same time, the use of monitoring software may also lead to the disclosure or abuse of your personal information, which may pose a security risk. In order to comply with the law and protect your privacy, it is recommended to avoid buying, selling or using such illegal software.