The history of Jan Koum: from food stamps to WhatsApp
On February 24, 2009, his birthday as he turned 33, Jan Borysovych Koum registered WhatsApp Inc. in California. The app did not yet exist. The name was a play on “what’s up.” Five years later, he signed the sale to Facebook — around US$ 19.3 billion — in the white building in Mountain … Read more