AFAIK its not possible to secure the
HTML Source[
^] , one thing you shall try is, create a mapping table for the
reference number
with respect to
ID
or some other value. and use the ID value as
attribute
to the list item which is not vulnerable to reveal your confidential data. and by means of
query string
mechanism you shall get the reference number from mapping table by the ID which is being passed. or you shall
encrypt
the value before assigning it to the
attributes
and retrieve the same and
decrypt
it.