errr, yeah, if you want to kill an ant with a nuke.

Or just change your password from the default and set ssh/web/telnet administration to local segment only.

Did you read the article?

ermm, I think the problem here is that the OP is referring to two different things, "sleep" and "hibernate", but unless I am incorrectly remembering my ACPI (which is quite possible), Linux is in fact, if not "in charge once the machine is alseep", at least in charge of correctly putting all various pieces of the system into S3 sleep mode correctly. I know that for a long time my Thinkpad had powerdrain problems in S3 because of incorrectly suspended wifi. For hibernate mode (assuming true write to disk and power off), then of course Linux isn't in charge.