File systems, Data Recovery, Partitioning and Drive Imaging.
Anything to do with Virus, Spyware, AdWare, Trojans, their detection and removal. Also recommend settings and procedures.
Anything to do with PC security, Firewalls, Passwords, Configuring security policies and preventing Virus, Spyware, AdWare, Trojans getting on your PC in the first place.
Security = Preventing
Issues that span the Windows OS and are not linked to one particular version.