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Quantum Cryptography Cracked?

Swedes find vulnerability in supposedly secure quantum cryptography system

4 min read

29 April 2008--Quantum cryptography, touted by scientists as the ultimate unbreakable code, may turn out to be susceptible to eavesdropping after all when implemented practically, according to a Swedish duo.

”Quantum codes are supposed to guarantee 100 percent security,” says Jan-Ake Larsson, associate professor of mathematics at Linkoeping University, in Sweden. ”If they don't live up to that promise, that's a problem.”

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The Spectacular Collapse of CryptoKitties, the First Big Blockchain Game

A cautionary tale of NFTs, Ethereum, and cryptocurrency security

8 min read
Vertical
Mountains and cresting waves made of cartoon cats and large green coins.
Frank Stockton
Pink

On 4 September 2018, someone known only as Rabono bought an angry cartoon cat named Dragon for 600 ether—an amount of Ethereum cryptocurrency worth about US $170,000 at the time, or $745,000 at the cryptocurrency’s value in July 2022.

It was by far the highest transaction yet for a nonfungible token (NFT), the then-new concept of a unique digital asset. And it was a headline-grabbing opportunity for CryptoKitties, the world’s first blockchain gaming hit. But the sky-high transaction obscured a more difficult truth: CryptoKitties was dying, and it had been for some time.

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