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Quantum Technology Promises Practical Cryptography With Unbreakable Keys

Toshiba reports the first quantum key distribution scheme to achieve speeds exceeding 10 Mbps over standard fiber-optic lines

4 min read
Conceptual illustration representing a quantum cryptography key.
Illustration: iStockphoto

Cryptographic protection of sensitive information is arguably facing its most severe challenge to date thanks to quantum computers. To counter this threat, researchers around the globe are investigating new ways to protect secret keys used to send and unlock encrypted data. One advanced method close to commercialization is quantum key distribution (QKD).

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How Police Exploited the Capitol Riot’s Digital Records

Forensic technology is powerful, but is it worth the privacy trade-offs?

11 min read
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 Illustration of the silhouette of a person with upraised arm holding a cellphone in front of the U.S. Capitol building. Superimposed on the head is a green matrix, which represents data points used for facial recognition
Gabriel Zimmer
Green

The group of well-dressed young men who gathered on the outskirts of Baltimore on the night of 5 January 2021 hardly looked like extremists. But the next day, prosecutors allege, they would all breach the United States Capitol during the deadly insurrection. Several would loot and destroy media equipment, and one would assault a policeman.

No strangers to protest, the men, members of the America First movement, diligently donned masks to obscure their faces. None boasted of their exploits on social media, and none of their friends or family would come forward to denounce them. But on 5 January, they made one piping hot, family-size mistake: They shared a pizza.

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