Comment: Great Question

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In reply to comment: But I don't get it.... (see in situ)

Great Question

I should have included that in there.

I downloaded Malware from what I thought was a reputable site.
They were able to steal my PW's I had saved on my computer.
With access to email and Exchange PW they were able to withdraw my coins.

Moral of the story, Don't store your PW's on your computer and use 2 factor authentication.