"Scan Policies" are the compilation of security checks N-Stalker will execute against a specific target. N-Stalker's default installation has a large set of preset policies, however, you are free to modify them and create your own policies.

To invoke N-Stalker's "Policy Editor", click on "Policy Editor" button in N-Stalker's top menu:

Available policies are published in the right bottom corner of N-Stalker's main screen, under "Preset Policies" section:

If you right click over it, a context menu will allow you to take a quick action against the selected policy, including: