If you are one of the victims, just calm down.
Most of the computer infected is running Windows 7. The biggest cyberattack called WannaCry has aroused much attention around all the world.
You will be asked to pay a certain amount of money (usually in Bitcoins) to decrypt files encrypted.
If you see an alert 'Oops, your files have been encrypted' when trying to open your personal files, then your computer has been infected with malware.
