Wannacry is a ransomeware.
a ransomeware is a sophisticated piece of malware that blocks the victim’s access to his/her files, and the only way to regain access to the files is to pay a ransom.
WannaCry is far more dangerous than other common ransomware types because of its ability to spread itself across an organization’s network by exploiting a critical vulnerability in Windows computers, which was patched by Microsoft in March 2017 (MS17-010).
The exploit, known as “Eternal Blue,” was released online in April in the latest of a series of leaks by a group known as the Shadow Brokers, who claimed that it had stolen the data from the Equation cyber espionage group.
WannaCry works by encrypting data on a computer that has been infected. It then tells the user that their files have been locked and displays information on how much is to be paid and when - payment is taken in Bitcoin.
Once your system has ransomware, your choices are limited: pay or don't pay. Those are your options.
If you do choose to pay, you need to make sure that they will release your data, and there really isn't a guarantee of that. In fact, in reality, by paying the attackers, you're really only fuelling the ransomware culture.
Once they know you'll pay, they'll know others will too.
Your best option for protecting yourself from ransomware is to backup your files, invest in some decrypters and create a best practice guide for such attacks.
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