Twin directories of debian-security:

[DIR]  ftp://ftp.hosteurope.de/mirror/ftp.debian.org/debian-security/
[DIR]  ftp://ftp.sh.cvut.cz/storage/1/debian-security/
[DIR]  ftp://ftp.tu-chemnitz.de/.SAN0/pub/linux/debian/debian-security/
[DIR]  ftp://ftp.uvsq.fr/pub/debian/debian-security/
[DIR]  ftp://ftp.debian.or.jp/debian-security/
[DIR]  ftp://ftp.southcom.com.au/debian-security/
[DIR]  ftp://ftp.eq.uc.pt/pub/software/unix/Linux/debian-security/
[DIR]  ftp://193.226.140.51/debian-security/
[DIR]  ftp://ftp.uevora.pt/debian-security/
[DIR]  ftp://ftp.usc.es/pub2/debian-security/
[DIR]  ftp://ftp.uni-kl.de/pub/linux/debian-security/
[DIR]  ftp://ftp.de.netclusive.de/pub/Linux/debian-security/
[DIR]  ftp://212.211.132.32/debian-security/
[DIR]  ftp://ftp.uni-klu.ac.at/linux/debian-security/
[DIR]  ftp://galatea.rotfl.eu.org/mirror/security.debian.org/debian-security/
[DIR]  ftp://ftp.unt.edu/mirrors/debian-security/
[DIR]  ftp://ftp.in2p3.fr/pub/linux/debian-security/
[DIR]  ftp://quatramaran.ens.fr/pub/Debian/debian-security/
[DIR]  ftp://200.17.202.17/debian-dists/debian-security/
[DIR]  ftp://83.166.201.99/debian-security/
[DIR]  ftp://ftp.fh-giessen.de/pub/linux/debian-security/
[DIR]  ftp://ftp.nz.kernel.org/pub/debian-security/
[DIR]  ftp://200.17.202.16/debian-dists/debian-security/
[DIR]  ftp://ftp.med.univ-tours.fr/debian-security/
[DIR]  ftp://ftp.uni-augsburg.de/mirrors/debian/ftp.de.debian.org/debian-security/
[DIR]  ftp://ftp.tu-ilmenau.de/Mirrors/security.debian.org/debian-security/
[DIR]  ftp://ftp.zcu.cz/pub/linux/debian-security/
[DIR]  ftp://ftp.ath.cena.fr/debian-security/
[DIR]  ftp://ftp.ankara.edu.tr/debian-security/
[DIR]  ftp://64.15.134.18/debian-security/
[DIR]  ftp://ftp.rfc822.org/pub/mirror/security.debian.org/debian-security/
[DIR]  ftp://ftp.cl.debian.org/debian-security/
[DIR]  ftp://ftp.lf.net/pub/Mirrors/ftp.debian.org/debian-security/
[DIR]  ftp://24.215.0.24/Debian/debian-security/
[DIR]  ftp://ftp.uni-kassel.de/Mirrors1/ftp.de.debian.org/debian-security/
[DIR]  ftp://ftp.sci.usq.edu.au/pub/debian/debian-security/
[DIR]  ftp://ftp.3logic.net/.1/debian-security/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/linux/debian-mirror/debian-security/
[DIR]  ftp://ftp.cesca.es/mirror/debian-security/
[DIR]  ftp://ftp.uni-siegen.de/pub/debian/debian-security/
[DIR]  ftp://128.31.0.36/debian-security/
[DIR]  ftp://ftp.uwa.edu.au/mirrors/linux/debian-security/
[DIR]  ftp://ftp.mgts.by/pub/debian-security/
[DIR]  ftp://ftp.uni-frankfurt.de/pub/Mirrors3/debian.org/debian-security/
[DIR]  ftp://debian.lcs.mit.edu/debian-security/
[DIR]  ftp://ftp.nz.debian.org/debian-security/
[DIR]  ftp://ftp.linorg.usp.br/debian-raiz/debian-security/
[DIR]  ftp://ftp.psn.ru/pub/Linux/debian-security/
[DIR]  ftp://ftp.man.szczecin.pl/pub/Linux/debian-security/
[DIR]  ftp://ftp.debian.de/debian-security/