Cash is the most expensive place to hold any excess savings.

Traditional encryption methods have long been vulnerable to quantum computers, but two new analyses suggest a capable enough ...

Charles H. Bennett and Gilles Brassard, winners of this year’s Turing Award, spent their lives touting the advantages of the ...

Building a utility-scale quantum computer that can crack one of the most vital cryptosystems—elliptic curves—doesn’t require ...

As Iran has shown, warfare involves far more deadly projectiles than it once did. It’s a problem Ukraine has been dealing with for years. By Michael Schwirtz Michael Schwirtz has covered the war in ...

As Iran unleashes a wave of retaliatory drones strikes on critical infrastructure around the Persian Gulf, Ukrainian expertise in countering those drones appears to be in demand. Days into the war ...

Now that the Supreme Court has struck down Trump's "emergency" tariffs, will the government refund the billions of dollars it unlawfully collected? And as Trump turns to other tariff authorities, how ...

Mathematicians just made a big leap forward on one of the field’s all-time favorite problems. Curves—squiggly lines through space, such as a comet’s trajectory or a stock market trend—are some of math ...

During the domestic political pandemonium last week it was almost possible to forget we are in the middle of the most serious threat to peace and security in Europe for forty years. We were talking ...

Most people don’t think twice about the water running through their home, but hard water has a way of making itself known — slowly, subtly, and usually at the worst possible moment. It’s the kind of ...

PayPal’s stock just staged one of its worst daily drops on record, and that sends a message about the tough road ahead for incoming CEO Enrique Lores. The company has struggled to adapt to changes in ...

Shoppers have 'more choice than ever before' when it come to payments, and PayPal has been slow to adapt to a more competitive landscape Enrique Lores is taking over as PayPal's CEO. He helped ...