|Post date: 2007-02-07 22:16|
I'll answer my own post in case anyone needs the solution.
Apparently if I add the following http-header:
P3P: CP="CAO PSA CONi OTR OUR DEM ONL"
When I set the cookie. It will be available even if the page is accesed as a third party.
I'm not sure what kind of securit Microsoft think is added by that but if it floats their boat - ok with me. :-)