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by chatmasta 513 days ago
Step one is to unplug the machine from the internet. Step two is to use another machine to change all your passwords, starting with the “pivot” passwords - your password manager master password, your email accounts, your AppleID, your mobile provider - followed by financial accounts and then all others. While changing passwords, make sure to “invalidate all sessions” where possible.

Only after you’ve done all this should you move onto Step 3: reformat your computer and install the OS from scratch.