A lock screen from a cyber attack warns that data files have been encrypted on a laptop computer in this arranged photo in London, U.K., on Monday, May 15, 2017. Governments and companies around the world began to gain the upper hand against the first wave of an unrivaled global cyberattack, even as the assault was poised to continue claiming victims this week. Photographer: Simon Dawson/Bloomberg
The malware attack known as WannaCry (or Wcrypt) has quickly become one of the worst cyberattacks in recent memory. But the damage could've been prevented.
"Go home tonight and open your door and leave it open all day," said Kevin Cardwell, a computer security architect and online instructor for Udemy. "Now let's see if anyone comes into your house."
