由酒店脱库事件想到的：虽然Shadowsocks和V2Ray都是代理工具，但也具备了一些VPN的特性。比如用户可以强制中转127.0.0.1的流量，把服务器当成内网。复杂一点的做法是把一个域名解析为内网IP，从而绕过一些基于IP的防御机制。所以，所有不能实时解析DNS并拦截内网请求的代理工具，都是有安全隐患的。在选择代理工具时，请仔细查阅其文档或源代码。当然，V2Ray的出厂设置(Linux)，就已经包含了上述的拦截。
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With the help of the Search Filters option, users can now filter search results by type. They can do that by using the new tabs: Media, Links, Files and others. Searches can be done based on the particular time period like by typing in the date or even “Yesterday”. If users type in the name of a person, group, channel or bot, an extra filter will be applied to the searches.
Secure video calling is in high demand. As an alternative to Zoom, many people are using end-to-end encrypted apps such as WhatsApp, FaceTime or Signal to speak to friends and family face-to-face since coronavirus lockdowns started to take place across the world. There’s another option—secure communications app Telegram just added video calling to its feature set, available on both iOS and Android. The new feature is also super secure—like Signal and WhatsApp and unlike Zoom (yet), video calls will be end-to-end encrypted.
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