When malicious hackers stole data from Change Healthcare and demanded a ransom, providers lost an estimated $100 million per day early on.
How the criminal underworld operates the ransom business.
Uber's new CEO, Dara Khosrowshahi, has criticized the way the company dealt with the security breach.
Hackers are holding up businesses for ransom. To pay or not to pay? That is the question.
The ransomware known as WannaCry has affected individuals and companies worldwide. Could it have been prevented?
