My knowledge of http transactions isn't all that broad or deep, but if a web server is trying to print to a client, and the connection to the client somehow happens to fail or vanish in the midst of the printing, wouldn't that cause this sort of "connection closed by remote host" error report?

As for the message being in Portuguese, as others have pointed out, there's likely to be something in the script that would account for the choice of language.

In reply to Re: Strange die message at print line: hacker attack? by graff
in thread Strange die message at print line: hacker attack? by Andre_br

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