1. Privacy and data protection: LinkedIn accounts contain users' personal information and professional data, including work experience, educational background, contact information, etc. This information belongs to the user's private content, and others have no right to access or use it.

2. Account security: Each LinkedIn account has a specific email address and password as login credentials. Users should properly protect their account information and prevent others from accessing accounts, impersonating users or engaging in fraud.

3. Professional reputation: LinkedIn account is a part of personal professional image, reflecting personal work experience, skills and professional background. If someone else uses someone else's account, it will confuse others or damage their professional reputation. LinkedIn is a professional social networking platform for communication between professionals. Each LinkedIn account belongs to a specific user, who can share personal information, work experience, skills and so on. And interact with other professionals.