Today, I saw a weird situation in Codeforces. When I enter the site, it shows me a usual site for a moment. But after that, it turns to blank webpage with only a string "What does this code do?". I saw webpage's HTML code and found out there's an unusual javascript snippet in the blog entry. I thought it's kind of an XSS attack and tried again with "block javascript" option on.

I'm not sure why this happened, but hope this won't last long. If the administrator of the Codeforce can see this, please fix it soon.

p.s. The author of that article(with harmful script) is "10minutemail", it seems he(or she) used a temporal mail.