Firefox is sending my ".domain.tld" cookies when I go to sub.domain.tld.
How can I make sure that the browser only sends cookies of ".sub.domain.tld" and not ".domain.tld"?
A:
You cannot. If you set a cookie on .domain.tld it will be sent to domain.tld and all subdomains.
Although this may be unrelated to your problem, take a look at sstatic.net - where the Stack Overflow family of sites host their static resources.
Alex Barrett
2009-11-24 12:37:16