BBC News Review: Cyber-attack: What is ransomware?

source: BBC Learning English     2017年5月16日
Neil and Dan teach you how to use the language the world's media is using to discuss this story: A virus has locked thousands of government, company and public service employees out of their computers. The global cyber-attack started on Friday and continued across the weekend.

Vocabulary
surge: a sudden increase
ransomware: a virus designed to stop a computer working unless money is paid
stopped in its tracks: stop moving or doing something suddenly
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