Millions of iPhone, iPad and Android users have been warned of two new Whatsapp alerts which could leave devices either unable to send messages, or hand highly personal and sensitive information over to cybercriminals.
The first alert affects all with Android devices, with hackers using a fake version of the popular IM service called YoWahtsApp - laced with nasty malware known as Triada.
The security breach was initially spotted by experts over at Kasperky.