Online data is generally pretty secure. Assuming everyone is careful with passwords and other protections, you can think of it as being locked in a vault so strong that even all the world’s ...

For years, the threat of quantum computing lived comfortably in the category of “interesting but distant,” but that comfort is gone.

PsiQuantum co-founder Terry Rudolph said in July it has no plans to attack Bitcoin, even if its upcoming facility becomes powerful enough to break the blockchain’s cryptography. The quantum computing ...