So, let me give this some context so you know what is going on here.
So, now that I have a numbat GIF in my signature, I wanted to change my signature again to change the text. Then it brought up:
"Hacking attempt...
Close"
What the heck happened? Does the site think I'm trying to hack myself? I need help :c
Probably nothing to worry about. You should try clearing you cache and resetting your browser. Sometimes it happens when you put apostrophes in your signature I have heard, so if you have any of them delete them.
If nothing there works, you should log out of the forum completely and then only log in using the box below the banner- not the one to the side. Hope that helps you.