@Marcos Thanks for replying. This seems to be a piece of the kernel extension name identifier of ESET that was being listed and is not being listed anymore. After installation, subsisted 3 kernel extensions having ESET name identifiers according to kextstat command. One of these, having this "rkd" substring within the kernel extension name, just vanished. Just 2 subsist now. As reported, I uninstalled ESET (since the Product accomplished updates in the meantime), and reinstalled to see whether the original extensions were listed. But not. Then, since I was trying the product, I purchased a 1y activation signature, but the extension remains not listed. Since kernel extensions are important to the system, as well as regarding ESET, i would like to know the purpose of that kernel extension that has not been listed anymore.
Thanks a lot.