Yahoo's European advertising website serving malware to hundreds of thousands of visitors over the New Year's holiday period, businesses increasingly working with open source software after years of resisting its use, and 3D chips gaining in popularity.

The aftershocks of the huge security breach that the Target company experienced, a boost for an organization that is trying to reduce online activities' dependence on passwords, and a high-tech tennis racket that helps players improve their games.

Yahoo Mail experiencing a long outage, actions and statements by various governments hurting the bitcoin virtual currency, and headgear that notifies coaches about head injuries that athletes experience.

A plan by companies to design a framework for the Internet of Things, DARPA's development of video games that could help identify software vulnerabilities, and researchers finding two flaws that could let hackers attack smartphones.

A flaw in a vital communications protocol used by utility companies, mobile broadband adoption increasing rapidly except in countries with less-developed economies, and research on biometric systems designed to recognize people's bodies.

Attacks in which hackers hijack Internet traffic, a new system designed to help people who suffer accidental falls, and the first accredited university to let students pay for tuition with bitcoins.

The Anonymous hacking group attacking US government sites and stealing information, the Stuxnet worm infecting the International Space Station, and researchers using GPS to track a giant iceberg that could threaten shipping lanes.

A plan to close the WHOIS system for domain-name registration records, a program offering bug bounties for the entire Internet, and a study showing that streaming media consumes the greatest amount of bandwidth on most networks.

Scientists have developed a way to hide data within voice-over-IP packets, enabling people to secretly send information to others while having a normal phone conversation.

The announcement that 141 million smartphones run an application that allegedly captures information about users has caused a storm of controversy, including denials from the software’s vendor.