LinSec design, as specified in Chapter 4, was implemented fully in Linux kernel in approximately five thousand lines of C code. The implementation begun on Linux kernel version 2.4.15 and was ported onwards to the newer stable versions as they were published. Extended Ext2 FS Attributes (EA) kernel extension is used by LinSec implementation to enable association of special attributes with files as specified in the Subsection 5.3. At the time of writing this report, the current stable versions of Linux kernel and EA patch are 2.4.18 and 0.8.20 respectively.