Previously the web page for debian security was located on: security.debian.org
Going there now through http, will redirect to the new address www.debian.org/security/ But going there through https, will instead return SSL errror, cert by unknown CA "Debian SMTP CA" which seems to have "CA key identifier" "00 f6 08 13 4a 49 f7 da d3", entire cert sha256 fingerprint is "DF:68:20:DA:43:5A:7C:1A:9C:43:8B:56:56:24:92:A5:E6:EC:F6:B1:92:8F:D1:4C:9F:5D:93:C7:7D:13:26:1B"