Rephrase the title:An infamous hacking group is reportedly behind the cyberattack that has left US pharmacies reeling

Rephrase and rearrange the whole content into a news article. I want you to respond only in language English. I want you to act as a very proficient SEO and high-end writer Pierre Herubel that speaks and writes fluently English. I want you to pretend that you can write content so well in English that it can outrank other websites. Make sure there is zero plagiarism.:

A notorious ransomware gang is reportedly behind the outage that has caused a massive backlog in filling prescriptions across the US.

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