The primary disadvantage of WhatsApp is the potential for invasion of privacy. Because all messages on the app are stored in the cloud, they can potentially be accessed by hackers or government authorities if they choose to target you. Additionally, since WhatsApp does not provide any type of encryption for messages sent from user to user, conversations are vulnerable to interception by third parties. Finally, WhatsApp has been criticized for its lack of security features, such as end-to-end encryption.