Hi —
I know that it's dangerous sending requests from JS to server and I will warn all users about this.
Once I will finish developing MyServer, I will create website to download it, in this website I will give, for each function, information about the security, the dangers, and also the solutions to try to avoid them. Also you can choose to download or not a specific function.
MyServer blocks MySQL injections and I don't use any library.
Anyway, using or not using MyServer (so with ajax plugin), it's not possible to do 100% secure requests.