This video provides a comprehensive guide on how to secure your LinkedIn account against hacking and unauthorized access. It covers three core security measures: first, it shows you how to change your password, including the complete process of entering your current password, setting a new password, and confirming it; second, it demonstrates how to check all logged-in devices by reviewing the device list, IP addresses, and login locations to identify suspicious activity and promptly remove it; finally, it focuses on enabling Two-Factor Authentication, adding a second layer of security to your account by completing the setup with a verification code. The entire process is simple and easy to follow, suitable for all LinkedIn users to quickly master, effectively enhancing account security and preventing risks of account theft or information leakage.