Moved provisionally to Network Security Platform for better handling as we can't help you in home products I'm afraid. If this is not the right spot someone here will post and I will move it again.
Hi anitachoi, "read exposure" is not a feature or functionality. Network Security Platform has several categories to categorize attacks and these categories are organized in subcategories and one of these subcategories is "read exposure". Read exposure are those attacks that "suggest that a breach of confidentiality has occurred. Examples include directory traversal, dump of file content such as CGI
script, or read of other sensitive data files such as password and database records." (Extracted from IPS Administration Guide)
I hope this brings some light to your question.