This video deeply explains the core role of User Agent in CPA and affiliate marketing, along with anti-association operation techniques. The content covers why changing IP through incognito mode alone is still detectable, how to correctly obtain and switch User Agents, and how to achieve high success rates in secure multi-account operations with the help of NSBrowser anti-detection browser and free extensions. The video demonstrates the complete process from installing the User Agent Switcher extension to configuring proxies and creating independent browser fingerprints, suitable for practitioners who want to enhance the security of their affiliate marketing accounts, avoid account suspension risks, and master the logic of real self-clicking operations. The entire process is hands-on and can be followed directly, significantly reducing the probability of account suspension and improving revenue stability.