WannaCry Ransomware Attack Explained

🔥 Trending WannaCry Ransomware Attack Explained

7/30/2026 · 👁 0 · wannacryransomwarecyberattackmalwarenhscybersecurityglobal-cyberattack2017-cyberattack
Question
What was the WannaCry ransomware attack?
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The WannaCry ransomware attack was a global cyberattack that occurred on May 12, 2017, and rapidly spread across computer networks worldwide. It exploited a vulnerability in older versions of Microsoft Windows operating systems, specifically one known as "EternalBlue," which was reportedly developed by the U.S. National Security Agency (NSA) and later leaked by a group called "Shadow Brokers."

Once a system was infected, WannaCry encrypted files on the computer and demanded a ransom payment, typically in Bitcoin, in exchange for decryption. The attack crippled critical infrastructure and services, affecting hundreds of thousands of computers in over 150 countries, including hospitals, government agencies, and major corporations. Microsoft quickly released security patches for the vulnerability, even for unsupported operating systems, to help mitigate the spread. The attack highlighted the critical importance of regular software updates and robust cybersecurity practices for individuals and organizations alike.

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