Thank you for explain.F-Secure Internet Security is still sold on some stores. I have purchased a license 6 months ago. The only difference is the inability to control your license via F-Secure Portal (F-Secure Safe allows you to), but the protection is identical. Generally, F-Secure Internet Security is cheaper by a few bucks. Anyway, when you reinstall F-Secure Internet Security, the installer will ask you if you want to transfer the license to this PC. One more difference, F-Secure IS is not cross-platform. You cannot activate the mobile version using IS key.