Twin directories of advisories:

[DIR]  ftp://ftp.udc.es/mirror/freebsd/CERT/advisories/
[DIR]  ftp://ftp.ticklers.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.duth.gr/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.cs.uni-sb.de/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.jp.netbsd.org/pub/NetBSD-jp/cvs/htdocs/JP/security/advisories/
[DIR]  ftp://ftp.nsu.ru/mirrors/ftp.freebsd.org/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.funet.fi/.m/mirrors5/ftp.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.au.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.dfn-cert.de/pub/vendor/netbsd/advisories/
[DIR]  ftp://ftp.cz.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.duth.gr/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.mtu.ru/.4/NetBSD/security/advisories/
[DIR]  ftp://ftp.free.fr/.mirrors1/ftp.netbsd.org/security/advisories/
[DIR]  ftp://ftp.esat.net/mirrors/.3/ftp.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://128.118.2.96/pub/.mirrors/1/ftp.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.sk.freebsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/NetBSD/security/advisories/
[DIR]  ftp://ftp.uni-siegen.de/pub/cert-security/vendor/netbsd/advisories/
[DIR]  ftp://ftp.gwdg.de/pub/cert.dfn/vendor/netbsd/advisories/
[DIR]  ftp://ftp.in2p3.fr/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.nrc.ca/pub/systems/bsd/netbsd/security/advisories/
[DIR]  ftp://ftp.dk.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://133.24.255.161/mirror3/NetBSD/security/advisories/
[DIR]  ftp://202.18.64.24/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.jp.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.mtu.ru/.4/NetBSD/security/security/advisories/
[DIR]  ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/netbsd/security/advisories/
[DIR]  ftp://ftp.rmt.ru/.1/ftp.freebsd.org/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.radio-msu.net/.1/ftp.freebsd.org/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.cronyx.ru/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.uni-siegen.de/pub/cert-security/vendor/freebsd/advisories/
[DIR]  ftp://ftp.gwdg.de/pub/cert.dfn/vendor/freebsd/advisories/
[DIR]  ftp://ftp.gwdg.de/pub/misc/xorp/advisories/
[DIR]  ftp://ftp.cs.rpi.edu/mirrors/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.jp.xemacs.org/pub/NetBSD/security/advisories/
[DIR]  ftp://ftp.gascom.ru/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.dfn-cert.de/pub/vendor/freebsd/advisories/
[DIR]  ftp://ftp.aha.ru/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://yagr.zenon.net/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://147.52.159.12/mirrors/OpenBSD/cvs/www/advisories/
[DIR]  ftp://192.87.102.42/vol/1/netbsd/security/advisories/
[DIR]  ftp://ftp.udc.es/mirror/netbsd/security/advisories/
[DIR]  ftp://ftp.gts.cz/.2/os/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.man.szczecin.pl/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp5.uk.freebsd.org/pub/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.nstu.ru/pub/mirrors/ftp.freebsd.org/CERT/advisories/
[DIR]  ftp://ftp.csie.ncu.edu.tw/FreeBSD/CERT/advisories/
[DIR]  ftp://ftp.demon.nl/disk2/freebsd/CERT/advisories/
[DIR]  ftp://195.209.204.84/mirrors/ftp.freebsd.org/pub/FreeBSD/CERT/advisories/