Some Internet bad guys are exploiting heightened interest in the new Harry Potter movie to further their devious plot to take over the web, The New York Times reports. Their target is people who can be enticed to illegally watch a copy of the new film on the Web. (So perhaps there is some kind of perverse vigilante justice at work here.) PC Tools, a security company bought by Symantec last year, described the attack Thursday on their ThreatFire blog. The company says the bad guys are populating sites like Digg.com and Blogspot and sending spam e-mail with enticements to "’Watch "Harry Potter and the Half-Blood Prince online free" and links to a bogus film site. They are also flooding the comment sections of these sites with various Harry Potter related keywords, to try to trick search engines into displaying their site in search results.