Database - Privacy - Internet

Hi,

I need assistance in preparing an essay of 600 words with referencing please.

Problem details: There is much concern about a person’s privacy as the Internet captures increasingly more information about users. The CEO of Sun recently was quoted as saying, “Privacy? You have lost it now get over it!” (or there's a saying "On the Internet, nobody knows you are a dog" ) What techniques do web sites utilize to identify web surfers? How can their databases have entity integrity?

Regards,