Cookies tab

Click the numbers to learn about specific controls, or read an introduction. To reach this tab: 1. Go to Privacy / Main tab. 2. Under Cookie Control, click the Custom button. To customize a specific site: 1. Go to Privacy / Site List tab 2. Select the site you want to customize 3. Click the Options button.

Cookies tab

Use this tab to customize cookie control. You can:

• Choose what types of cookies to block
• Choose the period after which persistent cookies will expire
• Enable or disable Web bugs
• Allow or block transfer of private header information

Note This tab appears in both the Site Options dialog box (for customizing a particular site) , and in the Custom Privacy Settings dialog box (for customizing defaults).

Session Cookies

Use this control to block or allow session cookies.

Persistent Cookies

Use this control to block or allow persistent cookies.

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3rd party Cookies

Use these controls to:

• Block or allow third-party cookies
• Disable or enable Web bugs
• Block or allow the transfer of private header information via the http referrer header field.

Cookie Expiration

The sites that use persistent cookies may set those cookies to remain active for a few days, several months, or indefinitely. While a cookie is active, the site (or third party) that created it can use the cookie to retrieve information. After the cookie expires, it can no longer be accessed.

If you choose to allow persistent cookies, you can override their expiration dates and specify how long they will remain active before expiring.

• Immediately after receipt allows persistent cookies to operate during the session in which they were received only. The cookie expires as soon as you leave the site.
• After X days allows persistent cookies to remain active for the number of days you specify. You can choose any number from 1 to 999. The default setting is 1.

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Privacy Advisor Control

Use this control to enable or disable the Privacy Advisor, and to control when it will be displayed.

Select Show Privacy Advisor to display the advisor whenever ZoneAlarm Pro blocks cookies or mobile code.

Clear the check box to prevent the Privacy Advisor from appearing.

Related Topics

Privacy protection
Using Privacy Advisor

Glossary

session cookie
A cookie stored in your browser\'s memory cache that disappears as soon as you close your browser window. These are the safest cookies because of their short life-span.

persistent cookie
A cookie put on your hard drive by a Web site you visit. These cookies can be retrieved by the Web site the next time you visit. While useful, they create a vulnerability by storing information about you, your computer, or your Internet use in a text file.

third party cookie
A persistent cookie that is placed on your computer, not by the Web site you are visiting, but by an advertiser or other \'third party.\' These cookies are commonly used to deliver information about your Internet activity to that third party.

web bug
An image file, often 1x1 pixel, designed to monitor visits to the page (or HTML e-mail) containing it. Web bugs are used to find out what advertisements and Web pages you have viewed.

HTTP referrer header field
An optional field in the message that opens a Web page, containing information about the "referring document." Properly used, this field helps webmasters administer their sites. Improperly used, it can divulge your IP address, your workstation name, login name, or even (in a poorly-implemented e-commerce site) your credit card number. By selecting Remove Private Header information in the Cookies tab, you prevent this header field from transferring any information about you.