Explainer: What is ransomware?

Computers across the world were locked up Friday and users' files held for ransom when dozens of countries were hit in a cyber-extortion attack that targeted hospitals, companies and government agencies.

Spying made simple: Hackers use old tools to dodge detection

A Romanian security firm says it has discovered a ring of digital spies using bottom-rung tools to break into hundreds of government computers. The find suggests that you don't necessarily need sophistication to steal secrets.

Alibaba, China Mobile announce development partnership

Chinese e-commerce giant Alibaba and the country's biggest phone carrier, China Mobile, announced a partnership Wednesday to develop internet-related services as web users migrate to mobile devices.

Fed agency blames giant hack on 'neglected' security system

The agency that allowed hackers linked to China to steal private information about nearly every federal employee—and detailed personal histories of millions with security clearances—failed for years to take basic steps ...

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