Clever hack uses headphones to control Siri and Google Now remotely

Researchers working for the French government have found a new way to silently and remotely take control of Siri or Google Now on your smartphone, according to a report from Wired.
The method is ingenious but limited, working only over short distances and requiring the target to have a pair of microphone-enabled earphones plugged into their phone.
The hack takes advantage of the fact that a headphone cord can double up as a makeshift antenna, with hackers sending electromagnetic signals to the wire which are converted into audio input.
The target device interprets these as regular voice commands, allowing hackers to carry out anything a normal user can do.