<A HREF="http://news.zdnet.com/2100-1009_22-5508607.html?tag=zdnn.alert">An anti-Santy worm</A> that uses search engines to spread among online bulletin boards has been spotted, a security company has reported. F-Secure said on Friday that it was aware of seven sites that had been defaced by the worm, which appears designed to combat the Santy worm. The anti-Santy worm searches Google for sites that use the PHP Bulletin Board (phpBB) software exploited by the earlier worm, infects the sites and attempts to make the sites more secure by installing a patch.