Google sent word that it had already patched the Chrome exploit demonstrated in CanSecWest's Pwn2Own side contest, Pwnium. Linux, Mac, and Windows versions, along with the Chrome Frame plugin for Internet Explorer, should all be secure today. It's now known to have involved universal cross-site scripting and "bad history navigation," although wider details wouldn't be published until most users of Chrome and other WebKit-using browsers like Safari were using secure versions.
