- WhatsApp co-founder Jan Koum is leaving Facebook after clashing over data privacyThe Verge
- WhatsApp co-founder Jan Koum is leaving Facebook and is expected to step down from the boardRecode
- WhatsApp Founder Jan Koum Quits After Internal Battle With Facebook Over User PrivacyGizmodo
- WhatsApp founder plans to leave after broad clashes with parent FacebookWashington Post
- WhatsApp founder to depart after reported spat with Facebook over securityCNET