Since 2014, the NHS has suffered 209 successful ransomware attacks according to stats based on Freedom of Information requests. However, the situation has improved dramatically since 2017, the year WannaCry ransomware hit the health service.
The figures, posted in a report from research company Comparitech, highlight the following statistics since 2014:
- 209 or more successful attacks, ranging from one computer to an entire system
- No ransoms reported to have been paid
- Estimated downtime of 206 days
- Only 6 attacks were reported after 2017, the year of WannaCry, albeit with the caveat that 20% of hospitals refused, or failed to respond to the survey
The research company sent the survey to 254 NHS Trusts, with 184 responding, 20 not responding and 50 refusing to hand over the information requested.
A September 2018 government report estimated the cost of WannaCry, aka WannaCrypt, to be up to £92m, most of which occurred in the aftermath, rather than during the attack, to restore data and systems.
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