A.8. Handling Cookies
Typical Uses of Cookies
Identifying a user during an e-commerce session
Avoiding username and password
Customizing a site
Focusing advertising
Problems with Cookies
It's a privacy problem, not a security problem.
Privacy problems include: servers can remember what you did in previous sessions; if you give out personal information, servers can link that information to your previous actions; servers can share cookie information through use of a cooperating third party like doubleclick.net (by each loading image off the third-party site); poorly designed sites could store sensitive information like credit card numbers directly in the cookie.
General Usage
Sending cookie to browser (standard approach):
Cookie c = new Cookie("name", ...
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