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Today at the Black Hat conference in Las Vegas, two security experts showed off a new Web-based break-in that completely bypasses all of the hardware memory protection built into Windows Vista. Once inside, a program can then load any content at all from the Internet via your browser. The best tech writeup is at Electronista: "The malicious code not only negates the effectiveness of Vista's Address Space Layout Randomization and Data Execution Prevention technologies, but specifically abuses their behavior to ensure an attack gets through." What does this mean for you? It's not the end of the world. But stand by for one very important Security Update.