WhatsApp will always have security issues....
Last week, it was reported that hackers had managed to install spyware on a large number of smartphones thanks to a previously unrevealed vulnerability in WhatsApp.
In a post on the Telegraph blogging site, Telegram founder Pavel Durov claimed that WhatsApp’s security issues stem in part from the decision by its parent company Facebook not to release the source code to the app. Durov claims that WhatsApp goes even further and tries to blur the app’s binaries. This means software security researchers cannot take a detailed look at them to discover privacy issues.