In the current world, devices are highly interconnected, and security and privacy are highly valued. In the future where the brain can be interconnected, these two issues will only become more critical. Mental safety researchers need to develop highly secure communication protocols to The risk of brain-brain communication is minimized. Policy makers also need to pass relevant laws to minimize the abuse of technology. Can the benefits of brain-brain communication overcome its risks? How will this technology change human evolution? Trajectory? Will society be better because of it? Perhaps it is time to discuss these issues. The text mainly states:. ['The possible negative effects of brain-brain communication technology should be paid attention to.', 'Security and privacy are the most noteworthy issues in brain-to-brain communication technology.', 'Society may not be better because of the application of brain-brain communication technology.', 'Brain-brain communication technology is a double-edged sword.']