If you want to get rid of the security nagging every time you launch a program, do the following:
Press Win+R to bring up the "Run" dialog, type "msconfig" and click OK. Allow it to launch. Click the "Tools" tab, scroll down to "Disable UAP,"...
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As far as I know, the "FF boys" never claimed it was 100% secure, just more secure than IE. No software can claim 100% security. Besides, when have you seen MS patch IE in just 3 days?
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