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DID: 4046925<br />

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you, but if you reply to or forward an email to a person with a JavaScript-enabled<br />

email program, that person is vulnerable.<br />

JavaScript is disabled in Microsoft Outlook and Outlook Express by adding <strong>the</strong>m<br />

to <strong>the</strong> Restricted Zone where <strong>the</strong> settings disable all Java, JavaScript, and ActiveX<br />

controls (do not just set <strong>the</strong> zone to "high"; you must choose <strong>the</strong> Custom option and<br />

do this manually). For detailed information on Email Wiretapping, see:<br />

About's Email Wiretapping Article<br />

http://antivirus.about.com/library/weekly/aa020501a.htm?once=true&<br />

See What's Arriving in Your Email<br />

Malicious hackers can easily disguise malicious file types sent via email using what<br />

are called "double extension" files. For example, you may think you've received a<br />

harmless graphic file in .gif or .jpg format when in fact <strong>the</strong> file is something else<br />

altoge<strong>the</strong>r-such as an executable or a visual basic script-and opening it can infect<br />

your computer. The reason you are being fooled is that Windows' default setting<br />

hides certain file types that are "known" to <strong>the</strong> operating system, so what you see is<br />

prettypicture.gifwhen <strong>the</strong> full file name is prettypicture.gif. vbs.<br />

To see all file extensions, you need to make a simple change to Windows itself (not<br />

to your browser or email tool). To enable show all files:<br />

Windows 2000<br />

• Open My Computer.<br />

• Select <strong>the</strong> Tools menu and click Folder Options.<br />

• Select <strong>the</strong> View Tab.<br />

• Under <strong>the</strong> Hidden files and folders heading select Show hidden files and<br />

folders.<br />

• Uncheck <strong>the</strong> Hide protected operating system files (recommended)<br />

option.<br />

• Click Yes to confirm.<br />

• Click OK.<br />

Windows XP<br />

• Click Start.<br />

• Open My Computer.<br />

o Select <strong>the</strong> Tools menu and click Folder Options.<br />

• Select <strong>the</strong> View Tab.<br />

546 UNCLASSIFIEDtfFQR QFFIGIAb \:lSi QNbY

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