Security Researcher Releases Browser Bug Tool

A security researcher who created a tool he used to find numerous bugs in major browsers has released it to the public, saying the importance of its distribution is heightened by the leak to the Web of an unpatched vulnerability in Internet Explorer. Michal Zalewski, a Google security researcher based in Poland, announced in a blog post that he was releasing a tool called "cross_fuzz" and said its distribution was a priority because at least one of the vulnerabilities discovered by the tool appears to be known to a mysterious third party.