How does it work?
By supporting the new privacy standards, Internet Explorer 4.0 helps you take advantage of personalized content on the Web, and puts control over the disclosure of any and all information into your hands, where it belongs.

Internet Explorer 4.0's Profile Assistant gives you the option of providing personal information to Web sites and then assists you in managing what data is provided to or withheld from a particular site. Profile Assistant notifies you when a site requests data, and then you can decide whether or not to give the information to a particular site. You can also encrypt personal information exchanged through the Profile Assistant, both while the data is being stored locally and when it is being transmitted to Web sites.