Your WIRED daily briefing. Today, WhatsApp co-founder Jan Koum is leaving Facebook's board after reported internal clashes over user privacy, Iran has banned the Telegram messaging app, growing up without animals could adversely affect mental health and more. 1. WhatsApp founder leaves Facebook over encryption and privacy concerns WhatsApp co-founder Jan Koum has announced that he's leaving Facebook and his position on its board. Although his departure post is suitably bland, Washington Post sources say that Koum is leaving following clashes over WhatsApp users' personal details being used for advertising and proposed changes that would weaken the app's strong end-to-end encryption. Facebook bought WhatsApp in 2014. Koum's fellow co-founder, Brian Acton, left in 2017 and has since been a harsh critic of Facebook's approach to user privacy. 2. Iran has banned Telegram Iran has issued a national ban of the Telegram instant messaging app, whic...