A followup whitepaper [PDF] to a recent talk at the blackhat security conference has been released outlining the risks associated with web based feeds such as RSS and Atom. From the article: "Attackers could exploit the problem by setting up a malicious blog and enticing a user to subscribe to the RSS feed. More likely, however, they would add malicious JavaScript to the comments on a trusted blog, Auger said. "A lot of blogs will take user comments and stick them into their own RSS feeds," he said."
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