Windows 7 sp1
As Microsoft announced Final End of Support for Windows 7 in January 2020, MCDI is recommending to install new SECURITHOR on Windows 10 pro instead.
While installed Securithor will continue to work for sometimes on Windows 7, it makes technical support more difficult due to lack of technological updates by Microsoft.
To note, 2020 updates of Securithor v2 might not be compatible with Windows 7 as they will require a higher technological level.