A quantum security leap?

The lesson coming out of all this would appear to be, then, that people who actually care about security can't rely on approaches whose failure modes are not well understood.

Which leads nicely onto the small matter of scientists, and the media of course, throwing around the word 'unbreakable' in the context of a security technology. Now that always sets the alarm bells ringing in my head where, over the course of the last 20 years, the message that there is no such thing as 100 per cent secure has been engraved onto my brain.