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462 windows 8: the missing manualpages you visit on a site, how long you spend on a site, what kind of information you like to find out, and so on. If you’re worried about invasions of privacy—and you’re willing to trade away some of the conveniences of cookies—Internet Explorer is ready to protect you. The Terminology of CookiesBefore you begin your cookie-fortification strategy, you’ll have to bone up on a little terminology. Here are a few explanations to get you started: • A first-party cookie is created by the site you’re currently visiting. These kinds of cookies generally aren’t privacy invaders; they’re the Amazon type described above, designed to log you in or to remember how you’ve customized, for example, the Google home page. Data Execution PreventionData Execution Prevention (DEP), one of Windows’ advanced security features, isn’t well known, but it protects you against a variety of threats. It monitors important Windows services (background programs) and programs to make sure that no virus has hijacked them to your PC from within its own system memory. If DEP finds out that an attack is under way, it automatically closes the offending service or program. DEP comes set to protect only Windows itself—not other programs. You can, though, ask DEP to monitor every program on your system, or just programs that you specify. The upside is better protection; the downside is that DEP could conflict with those programs, causing them to run erratically or not at all. In such cases, though, you can always turn off DEP protection for the af-fected programs.(Note: If DEP suddenly starts interfering with important Windows files and features, a recently installed program could be at fault. Try uninstalling it, or inquire if the publisher has a DEP-friendly version; that may solve the problem.)To turn on DEP for some or all programs: Open the Start screen. Type advanced system and select Settings under the search box. In the search results, click “View advanced system settings.” In the Perfor-mance section, click Settings, and then click the Data Execu-tion Prevention tab, shown at left. Select “Turn on DEP for all programs and services except those I select,” and then click OK.Should you find that DEP inter-feres with a program, click Add, and then follow the directions for selecting it. Incidentally, at the bottom of the Data Execution Prevention screen, you can see whether or not your PC offers DEP circuitry, which reduces its speed im-pact. If not, Windows runs a software-based version of DEP.power Users’ clinicPrivacy and Cookies