题目内容：

A global cyberattack, which is considered the biggest cyberattack ever, is spreading quickly and widely.1.

What the attack does

Cyber bad guys have spread ransomware(勒索软件), known as WannaCry, to computers around the world. It locks down all the files on an infected computer. The hackers then demand $300 in order to release control of the files.2.

How it happened

WannaCry takes advantage of a vulnerability(弱点) in Microsoft Windows. Microsoft released a security patch for the vulnerabilities in Marclf. 3. Playing  with fire finally caught up with the victims.

Microsoft requires Windows 10 customers to automatically update their computers, but some people with older PCs disabled automatic updates.

4.

The attack has been found in 150 countries, affecting 200,000 computers, according to Europol, the European law enforcement agency. FedEx, Nissan, and the United Kingdom’s National Health Service were among the victims. In the U.K., hospitals were crippled by the cyberattack, which forced operations to be canceled and ambulances to be diverted.

Who is vulnerable

5.Microsoft said it had taken the “highly unusual step” of releasing a patch for computers running older operating systems including Windows XP, Windows 8 and Windows Server 2003. So even people with older computers should update them.

Apple’s Mac computers were not targeted by this ransomware attack. Bad guys generally target Windows far more than Apple’s operating system because there are vastly more computers running Windows around the world.

A.When it will be solved

B.How widespread the damage is

C.That’s why it’s called ransomware.

D.The hackers remain anonymous for now.

E.Here is a super-simple explanation of what’s going on.

F.Anyone who hasn’t updated their windows PC recently is easy to attack.

G.But many corporations don’t automatically update their systems.