Those who have the software WhatsApp are being encouraged to download the latest version of the communications software. That’s because a sophisticated group of hackers-for-hire were able to take advantage of a flaw in the program and hijack dozens of phones without the user even having to do anything. WhatsApp confirms the problem and says it has released a new version of the app containing a fix. The spyware placed in WhatsApp didn’t directly affect the end-to-end encryption that makes its chats and calls private. It merely uses a bug in the WhatsApp software as an infection vehicle.