最近经常听到做外贸的朋友说，自己的社交账号莫名被封，平时能正常访问的网站突然打不开，连常用的谷歌账号也出了问题。仔细一查，很大原因是用了被污染的VPN共享IP节点。
可想而知，市面上绝大多数外网服务商不会把一个服务器IP只分给几个人用。技术上一个IP可以同时支撑200多个设备上网。当很多人挤在同一个IP代理上时，你怎么保证其他设备没有被木马感染，或者正在访问色情、病毒网站？别人的问题会直接连累你——要么账号被封，要么设备被入侵。
所以还是建议优先选择专享IP的VPN，更安全可靠。

Lately I’ve been hearing from many friends in foreign trade that their social media accounts keep getting banned, websites they used to access normally suddenly become unreachable, and even their regular Google accounts start having issues. After looking into it, a major cause turns out to be the use of polluted shared VPN IP nodes.
It’s easy to understand why. Most overseas network providers don’t dedicate a server IP to just a handful of users. Technically, a single IP can handle requests from over 200 devices at the same time. When so many people are crowded onto the same proxy IP, how can you be sure that none of the other devices are infected with malware or visiting adult/virus sites? Other people’s problems easily become yours—either your accounts get banned or your device gets compromised.
That’s why it’s still better to go with a dedicated/exclusive IP VPN. Safer and more reliable.