We have a tag software.
If there's a common theme, it escapes me. I see questions about… well, anything related to software, including using software to protect assets, defeating software countermeasures, using software as part of attacks, protecting software as an asset, etc. That covers almost all the questions on the site, really.
Is there anything to salvage here, or should we just burninate the tag?
The same question goes for hardware, but I can see it being justified — hardware-based security measures (and corresponding attacks) are a reasonably well-defined subcategory of the site.