@Jonatan this is not a solution, I don't want to use the "Basic Editor", because there are some options (for code etc.) that we need and they are not in the Basic Editor. My question very simple: users on my site are able to post HTML in questions, comments, and answers. Is that a normal behavior ? Or is it dangerous ? I don't know if it is the normal behavior of Q2A or if some plugin have activated this option ..