Quantum attacks worry computer scientists
In the weird world of quantum computing, the state of computer systems networked together is so fragile that a read access to a single quantum bit, or qubit, on one machine would require a network-wide reset. It's no wonder, then, that two researchers who are working on ways of defending against the future possibility of malicious attack assume that any unauthorized access to a quantum computer constitutes a catastrophic failure.
Read the complete story here. (Security Focus)