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研究密码学、隐私和网络安全的计算机科学家 Xiaofeng Wang 失去联络，其家还遭到了 FBI 搜查，原因未知。Xiaofeng Wang 于 2004 年在卡内基梅隆大学获得电子与计算机工程博士学位，当年获得了印第安纳大学 Bloomington 分校的助理教授职位，之后担任了印第安纳大学 Luddy 信息学、计算和工程学院的研究副院长。过去几周，他的电邮账户、电话号码和 Luddy 学院的个人资料页面都被其雇主删除。他的妻子 Nianli Ma 在大学图书馆 IT 部门担任首席系统分析师和程序员，她的资料页面也被删除了。上周五 FBI 搜查了两人的家。FBI 称他们在执行法庭授权的执法行动，其它信息没有披露。约翰霍普金斯大学密码学教授 Matthew Green 表示他听说 Wang 失踪已经两周，他的学生也联络不上他。 Ars:FBI raids home of prominent computer scientist who has gone incommunicado
研究密码学、隐私和网络安全的计算机科学家 Xiaofeng Wang 失去联络，其家还遭到了 FBI 搜查，原因未知。Xiaofeng Wang 于 2004 年在卡内基梅隆大学获得电子与计算机工程博士学位，当年获得了印第安纳大学 Bloomington 分校的助理教授职位，之后担任了印第安纳大学 Luddy 信息学、计算和工程学院的研究副院长。过去几周，他的电邮账户、电话号码和 Luddy 学院的个人资料页面都被其雇主删除。他的妻子 Nianli Ma 在大学图书馆 IT 部门担任首席系统分析师和程序员，她的资料页面也被删除了。上周五 FBI 搜查了两人的家。FBI 称他们在执行法庭授权的执法行动，其它信息没有披露。约翰霍普金斯大学密码学教授 Matthew Green 表示他听说 Wang 失踪已经两周，他的学生也联络不上他。 Ars:FBI raids home of prominent computer scientist who has gone incommunicado
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Tata Power whose core business is to generate, transmit and distribute electricity has made no money to investors in the last one decade. That is a big blunder considering it is one of the largest power generation companies in the country. One of the reasons is the company's huge debt levels which stood at ₹43,559 crore at the end of March 2021 compared to the company’s market capitalisation of ₹44,447 crore.
How Does Bitcoin Work?
Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”
