What Is Ransomware? How Does It Works? How To Be Secure?

From Last 2-3 Days New And Deadly WannaCry Ransomware Virus Has Found Which Infecting More Than 200,000  Computers Across The World Where Russian Are Highly Infected Meanwhile India Is In The 3rd Ranking.
Ransomware Attack Encrypts Your All The Files, Data, Documents Etc  And Demands A Money (300$bit coin) For Making It Accessible Again.
This Attack Mainly Hit The Hospitals In The UK Which Led Hospitals To Not Operate Properly. 1000s Of Patients Are Not Being Treated And Patient Data Has Been Locked. Now The Attack Is Widespread.

The Ransomware Changes The Affected File Extension Names To “.WNCRY”.
The Encrypted Files Are Also Marked By The “WANACRY!” String At The Beginning Of The File.

After The Ransomware Attack Victims WallPaper Changed Looked Like Below Image

How Does WannaCry Ransomware Work?

You Will Get An Email Asking You To Click A Javascript File Of The Format .JS. Once You Click It Your Files Will Be Encrypted In A .Crypt Format. Normally It Will Be Lucrative Offer In The Email Like Free Shopping Cards,Vouchers,Free Gifts,Free World Tour Tickets etc..So,Beware Before Open Any Spam Messages Or Unknown Mails.

How To Prevent Against WannaCry Attacks?

1. Avoid Clicking/opening Unusual Or Suspected Files.
2. Avoid Downloading Unknown Email Attachments
3. Install Latest Antivirus.[Find Antivirus From Here.]
4. Install The Patch From Link.(Click Here)
5. Disable SMB

Now Question Is What Is SMB & How To Disable?

The Server Message Block (SMB) Protocol Is A Network File Sharing Protocol, And As Implemented In Microsoft Windows Is Known As Microsoft SMB Protocol.

There Are Two Methods For Disable SMB.

Method 1:Search "Windows Features" In Start Menu & Open It.
Or
Open Control Panel→Select Program & Features→Select Turn Windows Features On Or Off.

Now,Uncheck SMB 1.0/CIFS File Sharing Support.

Click Ok & Restart Your PC.

Method 2:Open PowerShell & Use Following Command To Disable SMB 1.0

Disable-WindowsOptionalFeature -Online -FeatureName smb1protocol