WhatsApp founder Jan Koum announced that he is leaving the Facebook-owned company. On his Facebook page, Koum wrote that he is taking time to “do things I enjoy outside of technology,” including “collecting rare air-cooled Porsches” and “playing ultimate frisbee.” According to the Washington Post, Koum’s departure is the result of clashes over issues like encryption, and he is also expected to step down from Facebook’s board of directors. The departure also comes after he unloaded billions of dollars worth of Facebook stock.
In 2014, Facebook acquired the text messaging, group messaging, voice, and video calling app from Koum and co-founder Brian Acton for $19 billion. Acton left the company in November. In a January 2018 earnings call, Facebook CEO Mark Zuckerberg revealed WhatsApp had amassed 1.5 billion users and saw 60 billion messages sent per day.
Neither Koum nor Facebook were immediately available for comment.
On Koum’s post announcing his departure, Zuckerberg commented, “I’m grateful for everything you’ve done to help connect the world, and for everything you’ve taught me, including about encryption and its ability to take power from centralized systems and put it back in people’s hands. Those values will always be at the heart of WhatsApp.” Zuckerberg also reacted to the post with a “sad” reaction emoji.
Koum cited his Ukranian upbringing during communist rule as a reason why “the desire to protect people’s private communication” was one of WhatsApp’s core beliefs, in a 2016 post announcing the app’s end-to-end encryption.
Due to end-to-end encryption, information sent through WhatsApp can only be seen by the sender and its recipient. Neither WhatsApp, Facebook, nor third parties can see the content of messages, without access to the sender or recipient’s device. If a government or company asked WhatsApp to turn over your messages, the company wouldn’t be able to, since it can not read them. Yet while it can not read a message’s content, WhatsApp does store “metadata,” which includes the date, timestamp, and phone numbers associated with a message.
WhatsApp co-founder Brian Acton may also have had issues with Facebook stance on user privacy. After revelations that millions of Facebook users’ accounts had been improperly accessed by the political analytics firm Cambridge Analytica, Acton tweeted, “It is time. #deletefacebook.”
The news of Koum’s departure comes one day before Facebook’s annual developer conference, F8, where the company is expected to address user privacy and misinformation.