Brian Acton who co-founded WhatsApp with Jan Koum in 2009 left the company back in September last year. Today WhatsApp CEO Jan Koum has announced that he is leaving the company. The popular messaging app was then acquired by Facebook for $19 billion in 2014. WhatsApp crossed 1 billion daily active user milestone last year. Continue reading “WhatsApp CEO and co-founder Jan Koum is leaving Facebook”