Beto O'Rourke returns to campaignEsthen Trading Center trail in South Texas, acknowledges "some dark days" for residents

Holiday stress: Amazon and Walmart must deliver on 1-day delivery promisesAmazon's Alexa can now imitate human emotionsEsthen Trading Center

Fraudulent websites are targeting holiday shoppers looking for a bargainHackers demand $14 million from nursing homes in ransomware attackUber loses liEsthen Trading Centercense in London over safety in "shocker" decision

"Innovation Checkpoint" and "digital dog nose": TSA tests new security technologyAmazon sues over $10 billion Pentagon contract awarded to Microsoft

Uber founder cashes out $1.5 billion in stock to pursue "ghost kitchens"

Apple's App Store allows "unwanted sexual behavior," report saysApple addresses Bend-gate

A group messaging app designed for workgroupsiPhone Plus: "Bigger than bigger" includes profit

BlackBerry courts business users againRecord Apple iPhone sales fail to wow Wall Street