Twitter is adding an extra security measure to users' accounts in an effort to prevent unauthorized logins. For those who sign up, Twitter will send a six-digit code using a text message each time they sign in to Twitter.com.

South Korea's Samsung Electronics said Thursday that global sales of its latest flagship Galaxy smartphone had topped 10 million units less than a month after its debut.

The eagerly-awaited English translation of Haruki Murakami's latest novel could hit bookstores next year, a Japanese newspaper has reported.

Virgin America is emerging as a clear favorite within the airline industry, adding another accolade to its belt this year after travelers put the carrier at the top of the heap.