WhatsApp has amassed two billion users, up from 1.5 billion by the end of 2017, the company announced on Wednesday.
The mobile messaging app was founded in 2009 and acquired by Facebook (FB) in 2014. The deal was valued at $19 billion, the largest acquisition by the social media giant to date.
Despite its size, WhatsApp's growth remains robust: It has gained 500 million new customers over the past two years.
WhatsApp touts its end-to-end encryption technology, which ensures that all contents in chats are secured by default. Not even WhatsApp can read messages or listen to calls that take place among the participants of conversations, according to WhatsApp's blog posts.
(Source: CNN Business)