1. An integrated circuit ( 100 ) comprising a controller ( 102 ), multiple internal circuitries ( 111 , 112 , 113 ), and a security mode determination unit ( 122 ) that comprises multiple one time programmable components ( 316 - 318 ) for defining a security mode out of multiple possible security modes, whereas a selected circuitry mode affects access to the internal circuitries; whereas the integrated circuit ( 100 ) is characterized by comprising a reset determination unit ( 120 ); and whereas the controller ( 102 ) or the security mode determination unit ( 122 ) are responsive to an output of the reset determination unit ( 120 ).