What are the common signs of Twitter fraud and how can users protect themselves from falling victim to it?

Common signs of Twitter fraud include receiving unsolicited messages asking for personal information or money, encountering fake accounts impersonating well-known individuals or organizations, and being directed to click on suspicious links. To protect themselves, users should verify the authenticity of accounts before sharing personal information or engaging with them, avoid clicking on links from unknown sources, and enable two-factor authentication for added security.