Bartz defends her company's direction in a combative interview.
The famous venture capitalist, John Doerr, outlines his vision of the next wave of change on the Internet.
Executives also poked fun at rival Apple at the company's annual developer conference.
Scientists show how the social network could be mined for e-mail addresses.
An unprecedented analysis reveals that the micro-blogging service is remarkably effective at spreading "important" information.
It's unlikely we'll see versions of the voice-controlled "intelligent assistant" for non-Apple devices.
The new Open Graph platform might be a step towards an advertising solution.
Expert says offshore banks lag behind in keeping security infrastructure up-to-date.
As Washington airs plans for a new "cyber command," a top Russian official discusses the threat of cyberweapons.
"Promoted Tweets" will bring ads into the stream of real-time conversation.