"We don't have any criminal inspirations [sic]. Due to many reports, we do not have any backdoors included for spam relaying," text hidden in the worm and transcribed by Sophos and other antivirus companies reads.
The Netsky authors also declare their opposition to "hacking, sharing with illegal stuff and similar illegal content," according to the message.
As for the computer users harmed by their worm, the authors say users need better education, not software updates from antivirus companies.