The ABC can reveal that sensitive medical data of nearly one in two Australians, stolen from e-scripts provider Medisecure, is now listed as 'sold' on the dark web. The company said last week that 12.9 million people had been exposed in the breach, which took place last year. Now, an online listing suggests that not only has it been sold, but it's being hawked a second time at the half price rate of 25 thousand dollars.