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Blogspot.com cited as the No. 1 host for malware

Sophos research says the anonymity of setting up a blog site plus the ability to post malicious code links in the comments section makes Google's blog site a target.

According to a report out Wednesday, antivirus vendor Sophos says it detects one Web page with malicious content every 5 seconds--a trend that is up 300 percent from 2007.

In its Security Threat Report for the first half of 2008, Sophos says it finds just over 16,000 malicious pages each day, mostly the result of malicious SQL-injection attacks on legitimate Web sites such as the attack on Sony's U.S. PlayStation site in July. Tricks used by criminal hackers include using simple HTML code to place via SQL-injection a 1x1 pixel element (about the size of a pin prick) on an infected page. In loading the page, the Internet browser would then contact a server running exploit scripts and malicious code. But because the sites are legitimate, some security vendors struggle with blocking infected Web pages.

As for illegitimate sites, Sophos notes that Geocities and Blogger both make it easy for anyone to set up a Web site without much identification. Blogger, owned by Google, is particularly problematic, says Sophos, with the blog site alone accounting for nearly 2 percent of all malware hosts. It is not only possible for the Blogger sites to host malicious code, but criminal attackers can also inject links to malicious sites in the comments sections of the blogs.

A spokeperson for Google said "Google takes the security of our users very seriously, and we work hard to protect them from malware. Using Blogger, or any Google product, to serve or host malware is a violation of our product policies. We actively work to detect and remove sites that serve malware from our network."