Since my Chrome browser didn't trigger the warning, it may have something to do with what's in your browser cache - what sites you've visited before. I would shut down Chrome, restart it, and try again. Clearing the browser cache might also help. I don't fully understand how XSS works yet (still reading up on it) but I know it can be buggy, which is why some people just turn it off.
In all the time I've used Chrome, I've never seen that message. I rely more on McAfee's WebAdvisor to warn me of potentially dangerous sites. |