Ai Wei Wei, the renowned Chinese dissident who has been relentlessly persecuted by his own government, has written an op-ed for the Guardian comparing Chinese totalitarian surveillance with Prism and related NSA spying:
I lived in the United States for 12 years. This abuse of state power goes totally against my understanding of what it means to be a civilised society, and it will be shocking for me if American citizens allow this to continue. The US has a great tradition of individualism and privacy and has long been a centre for free thinking and creativity as a result.
In our experience in China, basically there is no privacy at all – that is why China is far behind the world in important respects: even though it has become so rich, it trails behind in terms of passion, imagination and creativity.
During my detention in China I was watched 24 hours a day. The light was always on. There were two guards on two-hour shifts standing next to me – even watching when I swallowed a pill; I had to open mouth so they could see my throat. You have to take a shower in front of them; they watch you while you brush your teeth, in the name of making sure you're not hurting yourself. They had three surveillance cameras to make sure the guards would not communicate with me.
But the guards whispered to me. They told stories about themselves. There is always humanity and privacy, even under the most restrictive conditions.
NSA surveillance: The US is behaving like China
Alice and Bob are the hypothetical communicants in every cryptographic example or explainer, two people trying to talk with one another without being thwarted or overheard by Eve, Mallory and their legion of nefarious friends.
Zero-knowledge proofs are one of the most important concepts in cryptography: they’re a way to “validate a computation on private data by allowing a prover to generate a cryptographic proof that asserts to the correctness of the computed output” — in other words, a way to prove that something is true without learning the details.
The New York Times rounds up direct links to several services surveillance opt-out screens, including some I’d never thought to look for (Amazon), as well as instructions for installing tracking blockers and no-script extensions that will limit the data trail you exhaust behind yourself as you traverse the net.
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