A system of mitigating code weaknesses in a target code by adding micro functionality fixes. The system includes a mitigation module installed a memory chip of a device and a server for identifying a plurality of code weaknesses in a target code installed in a memory chip of a device and sending configuration instructions to the mitigation module, the configuration instructions comprising: a plurality of micro functionality fixes, and a plurality of code weakness locations each associated with one of the plurality of code weaknesses and one of the plurality of micro functionality fixes. The execution of the mitigation module by at least one processor of the device induces an installment of the plurality of micro functionality fixes in the plurality of code weakness locations.