Researchers: Social bots masquerade as online users, adding posts that seem like they came from real people. When coordinated by a botmaster, these social bots can wreak havoc and steal information at a massive scale. As the social bots infiltrate the targets, they harvest all available private data. As the bots and humans become friends, the bots drop their original connections with each other, eliminating traces of artificiality. Many technologies, including data sharing and backups, integrate with sites like Facebook. Their authentication schemes rely on the implicit trust network that social bots break into.”]
Source: https://www.csoonline.com/article/2133254/your-facebook-friends-may-be-evil-bots.html