According to quantum theory, communication systems based on single-photon signals, where two parties share random secret keys known only to them, could provide unbreakable encryption. However, ...

Attila covers software, apps and services, with a focus on virtual private networks. He's an advocate for digital privacy and has been quoted in online publications like Computer Weekly, The Guardian, ...

Learn how to invest in stocks, including how to select a brokerage account and research stock market investments. Many, or all, of the products featured on this page are from our advertising partners ...