Information Warfare: An Endless Mystery Called WannaCry
https://www.strategypage.com/htmw/htiw/articles/20170521.aspx
May 21, 2017: On May 12th 2017 there was a rare bit of Internet based criminal activity that made headlines worldwide for reasons that are still not quite clear, both to the general public and Internet security professionals. Note that all the hacker terms are described at the end of this piece in plain English.
The incident began with the activation of ransomware malware called WannaCry. What made WannaCry so dangerous was that it made use of several capabilities including a hidden (but findable) backdoor program that tried to spread WannaCry to Microsoft Windows computers that had a known vulnerability but were not updated to remove the vulnerability. This automatic spread of malware is called a worm and it depends on other computers being vulnerable to allowing malware to be automatically installed. With WannaCry local PC networks run by Microsoft server software were vulnerable it the latest patches were not installed.
What made this newsworthy was that the worm depended on information stolen from the NSA (American National Security Agency) and made public by Wikileaks in March.
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Mad Poet Strikes Again.