Welcome to this morning's edition of "First To Know," a series in which we keep you in the know on what's happening in the digital world.
Today, we're looking at three ways that tech giants are expanding their reach. Google's Chrome browser added conversational search. In its single biggest market expansion in the tablet space, Amazon increased the availability of Kindle Fire. And Twitter finally announced two-factor authentication to help keep accounts secure.
Check out the video above for more on these stories.