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<p>of error), <a href="page.php?w=economics">economics</a> (see <a href="page.php?w=economics_of_security">economics of security</a>), <a href="page.php?w=mathematics">mathematics</a>, and <a href="page.php?w=architecture">architecture</a>. Some of the techniques used, such as <a href="page.php?w=fault_tree_analysis">fault tree analysis</a>, are derived from <a href="page.php?w=safety_engineering">safety engineering</a>.</p>

<p><big> History </big></p>
<p>Early forms of security engineering include the fields of <a href="page.php?w=locksmithing">locksmithing</a>,</p><p>
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