nginx is web server software, it could be that google were having some problems and you hit one of thier empty servers..
make sure you do a full virus and spyware check, if it all comes clear, I wouldn't worry about it, but watch for it happening again...
Life is a tool, use it wisely and properly. Don't break it, because you can't exchange it if you do.
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Fear, is not knowing. Terror, is finding out.