[teraflop]

The links on the "Downloads" page are HTTPS, but the download button on the home page points to http://gpl.savoirfairelinux.net/ring-download/windows/ring-w... with no security.

[brute]

Thank you, that explains it. For me, the same button links to https://ring.cx/en/download/gnu-linux but under windows you are right.