翻墙安全吗？节点是怎么钓鱼的?演示使用V2Ray搭建免费节点服务器进行钓鱼，篡改、盗取用户数据，http/https/中间人攻击/DNS劫持，科学上网、安全上网建议，翻墙原理分析，你还敢随便用吗？

The video explains how a V2Ray node can be exploited for phishing, data theft, man‑in‑the‑middle attacks, and DNS hijacking. It describes that HTTP traffic is transmitted in plain text, making it vulnerable to interception and tampering, while HTTPS normally protects data but can be compromised if the node’s root certificate is installed in the client’s trusted store. The presenter also clarifies that protocols such as ss, ssr, and vmess are essentially encrypted SOCKS5 proxies; the node decrypts the traffic to plain SOCKS5 data, which can then be read or altered. The discussion concludes that free and paid nodes offer similar security risks, and users should be cautious when using any proxy service.