Facebook turns 15 as company works to make site more securePosted: Updated:
Facebook hits a major milestone as 15 years ago today Mark Zuckerberg and the Winklevoss twins launched Facebook in a Harvard dorm room.
The site now connects 2 billion people around the world.
Some of Facebook's major expansions include buying Instagram and taking the company public.
The company is currently working on making the site more secure.