That's not really correct. Mercury IT appear to have been the subject of a ransomware attack. It appears they host some database systems for a range of organizations.
Ransomware is not really a "hacker" thing. Usually (94% of the time) it's kicked off with a phishing email which is usually part of a broad (not targetted) operation. Ransomware gets in, encrypts your files, and you get prompted to pay up to get your data back.
It's disappointing as ransomware is easily defended against, and indicates a failure of their systems and processes at multiple levels.
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