Prospect Medical Holdings, a chain that owns hospitals, as well as more than 165 outpatient facilities, said ransomware hackers had breached its system.

Hundreds of United Airlines flights were disrupted on Wednesday evening as the carrier grappled with a major computer system outage. The airline requested ground stops at its major hubs in the U.S.

Quantum computers are a key emerging technology, particularly for specific kinds of problems that require enormous computing ...

Fujitsu has started development of its planned 10,000-plus qubit superconducting quantum computer, with construction of the system expected to be completed in 2030. The quantum computer will initially ...

Federal officials are scrambling to assess the damage and address flaws in a sprawling, heavily used computer system long known to have vulnerabilities.