Researchers Qin Liu and Sebastien Sauge have demonstrated a method for eavesdropping on a provably secure quantum key distribution.

"Liu and Sauge gave a live demonstration in Berlin, in which they blinded the detector from a typical QKD system using a bright light source so that it no longer responded to individual photons," according to The H Security. "The researchers could, though, still trigger the detector using intense targeted pulses."

"The team was able to use this technique to eavesdrop on a real world QKD system which distributed keys over distances of 290 meters via fibre optic cables," the article states.

Click here to read the article at The H Security.