![A spate of ransomware attacks in recent months has compromised critical infrastructure and disrupted daily life across the United States and globally](https://abc17news.b-cdn.net/abc17news.com/2021/07/hypatia-h_2f8252a7589dd1a81c5ccd95ba231dcd-h_4d13866e5d213a332b32a999011ada75-300-375x225.jpg)
The anatomy of a ransomware attack
A threatening voicemail, research into company executives and finances, even step-by-step guides to using cryptocurrency. These are some of the evolving tactics of ransomware groups that have turned this cybercrime into a highly lucrative underground business. As CNN’s Clare Sebastian reports, businesses and law enforcement are racing to get ahead of them.
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