sarkeizen (106737) writes "According to nature.com a team of researchers has, for the first time, hacked into a network protected by quantum encryption. . The MIT group was able to entangle a photons polarization with its momentum. Which allowed them to get up to 40% of the information by measuring the particles momentum without significantly disturbing it's polarization. The researchers agreed that this kind of attack, although interested could be rendered useless by increasing the key length."