Case Study: WannaCry
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WannaCry Ransomware Attack
The WannaCry ransomware attack was a May 2017 worldwide cyber attack by the WannaCry ransomware cryptoworm which targeted systems running the Microsoft Windows OS by encrypting data and demanding payment in Bitcoin.
In May 2017, WannaCry brought the cyber security world to its knees. Within just one day it was reported to have infected more than 230,000 computers in over 150 countries. Many parts of our National Health Service (NHS) were infected, causing some hospitals and GP surgeries to run their services on an emergency-only basis during the incident. Some staff were even forced to revert to pen and paper and use their own mobiles after the attack affected key systems, including telephones.
Hospitals and doctors’ surgeries across the UK were forced to turn away patients. In fact, NHS England identified 6,912 appointments had been cancelled as a result of the attack. This all happened after they were infected with the ransomware, which scrambled data on computers and demanded payments of between $300 and $600 to restore access. People in affected areas were advised to seek medical care only in case of emergencies.