Bitcoin is buoyed today by fiscal assurances in the State of the Union address given by Trump but will it hold?

Ransom notes for Savannah Guthrie's mom demanded millions in Bitcoin. Here's why criminals like it.

Add Yahoo as a preferred source to see more of our stories on Google. The search for Nancy Guthrie enters its eleventh day. (Rebecca Noble/Getty Images) Crypto payments are playing a growing role in ...

Quantum computing is moving from theory to reality faster than many people expected—and that has major implications for cryptocurrency security.