There are many facets to iWeb security.
You get the following error when trying to access a netFORUM iWeb page:
A potentially dangerous request was detected from the client
This error means that netFORUM has validated one of the following and has found that there are some illegal characters:
Illegal characters can come from the following sources:
If you are getting an unusual number of these errors, make sure it is not because of an SQL injection attempt. If you have established that you are getting this error because of netFORUM or a user, then you can disable this particular security feature. See the following topic for the details: Validate Query String.