<p>A security casing (10) for use as a shield over an electronic circuitry (50), the security casing (10) having an outer surface (11) and an inner surface (13) defining an inner cavity (12) facing said electronic circuitry (50), the security casing (10) being provided with a conductive path (15) having predefined electrical characteristics measurable between a first connection point (16) and a second connection point (17). The security casing (10) is a three- dimensional structure wherein the conductive path (15) is an integral part of said security casing (10) extending continuously from the outer surface (11) onto the inner surface (13) of the security casing (10).</p>
