*nux how to create a backdoor-a vulnerability warning-the black bar safety net

Painstakingly（or ease of obtaining root after, Of course, want to long-term holding. To be later used to it. d0ing what u want t0 d0 : the traditional method is to build a back doorbackd00r. Even if the invasion is found, the better（advanced）back door still be able to make you again a relaxing...