How bad is WannaCry?

Within a day, WannaCry had spread around the world, infecting more than 230,000 computer systems in 150 countries and costing approximately $4 billion in financial losses. It was the most virulent self-spreading malware since 2003 when the Slammer worm infected most of its victims within one hour.

What damage did the WannaCry virus do?

As the ransomware spread beyond Europe, computer systems in 150 countries were crippled. The WannaCry ransomware attack had a substantial financial impact worldwide. It is estimated this cybercrime caused $4 billion in losses across the globe.

What impact did the WannaCry attack have?

Our analysis of the HES data demonstrated the impact of the WannaCry attack across the NHS in England. This resulted in a 6\% decrease in admissions in the infected hospitals, which included 1100 fewer emergency department (ED) admissions and 2200 fewer elective admissions in total.

Has NHS ever been hacked?

Perhaps the most infamous NHS hack was in 2017, when 45 NHS organisations’ systems were affected or taken offline by WannaCry ransomware—malicious software that demanded a ransom to restore users’ access to the system.

How much did WannaCry cost?

The WannaCry ransomware attack had a substantial financial impact worldwide. It is estimated this cybercrime caused $4 billion in losses across the globe.

How was the WannaCry ransomware stopped?

The attack began at 07:44 UTC on 12 May 2017 and was halted a few hours later at 15:03 UTC by the registration of a kill switch discovered by Marcus Hutchins. The kill switch prevented already infected computers from being encrypted or further spreading WannaCry.

Who wrote the WannaCry virus?

Marcus Hutchins
Marcus Hutchins, the malware researcher who became known as an “accidental hero” for stopping the WannaCry ransomware attack in 2017, has been sentenced to supervised release for one year on charges of making and selling the Kronos banking malware.