Twitter adds security measure to logins

Twitter is adding an extra security measure to users' accounts in an effort to prevent unauthorized logins.

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2 men arrested in killing teen over iPad in Las Vegas
Two men have been arrested in the killing of a teenage boy over an iPad in Las Vegas, police said Sunday.
Hire helpers through Task Rabbit website
SAN FRANCISCO - There's a website that lets you hire helpers for just about any kind of task; and best of all, you get to set the price.
Startups use Netflix rental model for clothing, jewelry
SAN FRANCISCO - Startups have applied the Netflix rental model to fashion, helping people spice up their wardrobe without breaking their budget.
Steve Wozniak to give Cal commencement speech
SAN JOSE, Calif. - Apple co-founder Steve Wozniak is giving the commencement speech Saturday at UC Berkeley, his alma mater.
Plans announced for new Union Square Apple store
SAN FRANCISCO - San Francisco city officials announced Thursday that Apple has plans to open a new retail store in Union Square.
Report: Yahoo nearing $1.1B acquisition of Tumblr
NEW YORK - Tech news site All Things D reports that Yahoo's board is meeting to consider whether to approve a $1.1B acquisition of Tumblr.
Teen dies after refusing to give iPad to thieves
LAS VEGAS - Las Vegas police are searching for thieves accused of running over a teen boy with their SUV after he refused give up his iPad.
NASA Ames scientists hoping to save Kepler
MOFFETT FIELD, Calif. - A rescue mission is under way at NASA Ames research center where scientists are trying to save their prized Kepler spacecraft.
Robots help track great white sharks
Bay Area researchers are using a powerful new technology to track some of the most majestic creatures in the ocean.
Labor group says Apple making progress at Foxconn
WASHINGTON - A labor group Apple joined to assess working conditions at manufacturing plants in China says conditions are improving.
FB boots users over topless Bea Arthur portrait
Facebook pulled the plug on user accounts after images showing a topless portrait of late Golden Girl Bea Arthur were posted.
Google's products dig deeper into people's lives
SAN FRANCISCO - More than 5,000 technology enthusiasts are pouring into San Francisco for the Google I/O developer's conference.