Google搜索技巧几种：
❶ 双引号：搜索精确字串匹配。示例："精确字串匹配"
❷ 减号：去除带有某些匹配的搜索结果。示例：海豚 -海豚湾
❸ 波浪号：模糊搜索。示例：音乐 ~网课
❹ site关键词：搜索特定网站内的结果。示例：音乐 site:tumblr.com
❺ 竖号：搜索匹配A或匹配B的结果。示例：海豚 | 海豹
❻ 两个点：搜索数字范围的匹配。示例：电影 1980..2000
❼ filetype关键词：搜索特定文件类型。示例：拜登 filetype:pdf source
BY 程序员之家
Telegram’s stand out feature is its encryption scheme that keeps messages and media secure in transit. The scheme is known as MTProto and is based on 256-bit AES encryption, RSA encryption, and Diffie-Hellman key exchange. The result of this complicated and technical-sounding jargon? A messaging service that claims to keep your data safe.Why do we say claims? When dealing with security, you always want to leave room for scrutiny, and a few cryptography experts have criticized the system. Overall, any level of encryption is better than none, but a level of discretion should always be observed with any online connected system, even Telegram.
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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