Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Sadmind worm was a self-propagating piece of malware. It exploited vulnerabilities in both Sun Microsystems'' Solaris (Security Bulletin 00191) and Microsoft''s Internet Information Services (MS00-078), for which a patch had been made available seven months earlier. It was discovered on May 8, 2001. The worm defaced web servers with a message against the United States government and the anti-Chinese cracking group PoizonBOx.