WannaCry ransomware (2017)
A self-spreading worm hit unpatched Windows machines, locking files and demanding bitcoin. It reached an estimated 200,000 computers across 150 countries within a day, spreading faster than IT teams could react.
Microsoft issued emergency patches and a kill switch slowed the worm, but the disruption was global.
Established fast-spreading ransomware as a top threat and showed that attacks outrun human response.
WannaCry demonstrated the machine-speed threat that SafeMind is built to counter — an attack that propagates before defenders can act.
