To stop the ransomware pandemic, start with the basics
That will help stop other sorts of cyber-mischief, too. "Governments should police the boundary between the orthodox financial system and the shadowy world of digital finance. Ransoms are often paid in cryptocurrencies. It must be made harder to recycle money from these into ordinary bank accounts without proof that the money has a legitimate source. Likewise with cryptocurrency exchanges, which should face the same obligations as established financial institutions."
From The Economist