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Communication Security: Web Based Services • Chapter 5 319

■ High, which blocks cookies that don’t have a compact privacy policy and
store information that contains information that could be used to contact
you without explicit consent.

■ Block All Cookies, in which all cookies are blocked, and any cookies
already on the computer can’t be read by Web sites.

Figure 5.15 Cookie Options Can Be Set in IE via the Privacy Tab in Internet
Options

In addition to the slide controller’s settings, IE 7 also has an Advanced button
that can be used to open the Advanced Privacy Settings dialog box, allowing
you to configure custom settings that will override cookie handling.These custom
cookie settings only apply to the Internet zone, allowing you to specify whether
first-party and third-party cookies are allowed or denied, or whether a prompt will
be initiated, as well as whether session cookies are allowed. Individual Web sites can
be defined whose cookies are either always allowed or always blocked. Preventing
all use of cookies is the most secure configuration, but it is also the least functional.
Many Web sites will not function properly under this setting, and some will not
even allow users to visit them when cookies are disabled.

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