World's Deadliest Computer Virus: WannaCry

Screen displaying WannaCry ransomware looking like a big red virus with lots of computer files and code in the background.

On May 12, 2017, a malware called WannaCry spread uncontrollably through 150 countries, affecting nearly every continent worldwide.

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Carlo's take

WannaCry demonstrated how vulnerable critical infrastructure is to ransomware. The attack succeeded primarily because organizations didn't patch known vulnerabilities. It's a brutal lesson: security isn't about sophisticated defenses—it's about basic hygiene like keeping systems updated.

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