Another example that if you don’t own the source code to your software, you can’t be fully sure what it does.
A curious computer security professional published findings Saturday that deconstructed the firmware code for some D-Link router devices and discovered a backdoor built directly into the code. By changing the user-agent in a web browser to “xmlset_roodkcableoj28840ybtide,” a user could bypass the security on the device and get online or control the higher functions of the router.