曾经在香港一家茶餐厅亲眼目睹：衣冠楚楚的白人夫妇，结账时颠倒黑白，说自己给了100美金，要求其余的用港币找零。收银小弟不慌不忙，直接说调监控，引得其他食客也来看热闹。老白男有一丝不耐烦：you know what,just keep the change.小弟摇手指表示拒绝，视频调出，镜头正对收银，小弟收到钱后，双手扯平纸币，前伸展示给夫妇看，嘴里同时报：“收您100文”，赫然是一张100块的港币… source
BY 豆瓣精选
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.
The S&P 500 slumped 1.8% on Monday and Tuesday, thanks to China Evergrande, the Chinese property company that looks like it is ready to default on its more-than $300 billion in debt. Cries of the next Lehman Brothers—or maybe the next Silverado?—echoed through the canyons of Wall Street as investors prepared for the worst.
豆瓣精选 from hk