Re: GET //awstats.pl? in apache logs

[highwaycode () securityfocus com, "[a]"@securityfocus.com, hotmail.com () securityfocus com]

Some versions of awstats had a vun which allowed command execution, I assume someone created a bot to test random 
DNS/IP addresses in the hope of finding a vulnerable server. Once found the bot would usually copy itself to the server 
and begin spreading.

If you do not have awstats installed this is not something I would worry about, If you are worried about future threats 
try installing something like mod_security.