NEED to speak with admin

There is a very strange popup on a post in Answers,

See the inputbox?

http://skilogs.com:80 require username and password
server says “Stop Attack”

What the hell is this? DDOS?

Nothing odd going on as far as I can tell. The image at the bottom of the page (answer by jahroy) is hosted on skilogs.com. I imagine since that answer was submitted two years ago something has changed on the server and it now needs a logon. I can delete the image if you like.

I would delete the image if I were you so users don’t get the login prompt.