WhatsApp co-founder Jan Koum to quit in loss of privacy advocate at Facebook
Stanford alumnus Acton and Ukrainian immigrant Koum co-founded WhatsApp in 2009. Facebook bought WhatsApp in 2014 for $19 billion in cash and stock.
May 01, 2018, 08:16 AM IST
Know! How a person rejected by Facebook, Twitter, became a billionaire
Sometimes refusals open the door to greater success.
Mar 16, 2016, 09:40 AM IST