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What is DNS?
The DNS, which stands for Domain Name System, acts as the phone directory of the Internet. Instead of phone numbers, computers communicate using numeric addresses called IP addresses that look like 19...
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An interview with Bruce Schneier on the Internet of Things, global surveillance, and cybersecurity
Bruce Schneier is a world-renowned cryptographer and security technologist whom the Economist has dubbed an “internet-security guru.” Schneier has authored a dozen books since 1993, with his next ...
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An interview with Mark Burdon on the sensor society phenomenon
Our devices, as convenient as they may be, are getting creepily good at collecting data. Phones, cars, and even carpets are packed full of sensors that can detect and record day-to-day activities with...
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Zero-knowledge proofs explained: Part 1
Zero-knowledge proofs explained Part 2: Non-interactive zero-knowledge proofs Cryptography mostly concerns itself with secure communications and includes hiding information from adversaries and authen...
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Meet Federico Tenga: The guy who teaches North Koreans about Bitcoin
Despite being the most hermetic country on Earth, North Korea is certainly no stranger to cyberspace—in both its uses and abuses. Despite a tiny local internet user base and just a few dozen local w...
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Zero-knowledge proofs explained Part 2: Non-interactive zero-knowledge proofs
In part 1 of our zero-knowledge proof series, we explained how a zero-knowledge proof could work when the verifier and the prover interact with each other. An interactive zero-knowledge proof has the ...
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What your internet service provider knows from your online traffic
From everything you ask Alexa to your emails and passwords, if you don’t encrypt your traffic, your internet service provider (ISP) can potentially see all of it. Because your ISP handles all your i...
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How to gift Bitcoin or other cryptocurrencies this Christmas
Need a belated, last-minute Christmas present on the fly? Why not give the gift of cryptocurrencies this Christmas—specifically, Bitcoin. Bitcoin doesn’t exist in physical form. The cryptocurrency...
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How to use Bitcoin’s multisignature wallets
A Bitcoin generally can only be spent by its owner as identified through their public key hash, e.g., their Bitcoin address. The Bitcoin protocol allows for different kinds of rules to define precisel...
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Two Supreme Court cases that will redefine your digital privacy in 2018
NOTE: This post was originally published on January 16, 2018 Within the next six months, the U.S. Supreme Court will rule on two cases that will determine whether the U.S. government’s already exten...
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