Several cyber security firms said WannaCry exploits a vulnerability in Microsoft and that Microsoft patched this in March.What is WannaCry - also known as WanaCrypt0r 2. People don’t always install updates and patches on their computers and so this means vulnerabilities can remain open a lot longer and make things easier for hackers to get in.Malicious software called ransomware has forced British hospitals to turn away patients and affected Spanish companies such as Telefonica as part of a global outbreak that has affected tens of thousands of computers.There are different variants of what happens: Other forms of ransomware execute programs that can lock your computer entirely, only showing a message to make payment in order to log in again.
It exploited a vulnerability in the Windows operating system believed to have been developed by the National Security Agency, which became public last month. Many security firms are already aware of WannaCry in past forms and most are looking at this one Zhuji Guanghui Machinery Manufacturers right now to see how it might be stopped.Ransomware has a habit of mutating and so it changes over time in order to find different ways to access computers or to get around patches (operating system updates that often include security updates).In the case of WannaCry, the program encrypts your files and demands payment in bitcoin in order to regain access..WHAT IS SO SPECIAL ABOUT WANNACRY?WannaCry is not just a ransomware program, it’s also a worm. There are some that create pop-ups that are difficult or impossible to close, rendering the machine difficult or impossible to use. Shadow Brokers said that they obtained it from a secret NSA server.The broad based ransomware attack has appeared in at least eight Asian nations, a dozen countries in Europe, Turkey and the United Arab Emirates and Argentina and appears to be sweeping around the globe, researchers said.
The identity of Shadow Brokers is unknown though many security experts believe the group that surfaced in 2016 is linked to the Russian government.WHERE HAS IT SPREAD?British based cyber researcher Chris Doman of AlienVault said the ransomware "looks to be targeting a wide range of countries", with initial evidence of infections in at least two dozen nations according to experts from three security firms.HOW DOES IT SPREAD?Ransomware is a program that gets into your computer, either by clicking on the wrong thing or downloading the wrong thing, and then it holds something you need to ransom. It was among a large number of hacking tools and other files that a group known as the Shadow Brokers released on the Internet.0, WannaCry and WCry?HOW DOES IT WORK?WannaCry is a form of "ransomware" that locks up the files on your computer and encrypts them in a way that you cannot access them anymore. Some ransomware that encrypts files ups the stakes after a few days, demanding more money and threatening to delete files altogether.Security experts warn there is no guarantee that access will be granted after payment.This means that it gets into your computer and looks for other computers to try and spread itself as far and wide as possible.The NSA and Microsoft did not immediately respond to requests for comment.