Web Directory

» AIX
   Security and other patches for AIX. Note that this is an FTP site.
   ftp://aix.boulder.ibm.com/aix/fixes/

» AIX Patches - Fixdist
   You need the "fixdist" program to install AIX patches.
   ftp://aix.boulder.ibm.com/aix/tools/fixdist/

» Adobe
   Security bulletins and technical briefs that provide information to customers.
   http://www.adobe.com/support/security/

» Apache Web Server
   Advisories and patches.
   http://www.apacheweek.com/security/

» Cisco
   Patches and advisories for Cisco products
   http://www.cisco.com/en/US/products/products_security_advisories_listing.html

» Citrix
   Security bulletins and hotfixes for Citrix products
   http://support.citrix.com/latestsecurityall!execute.jspa

» Compaq
   Patches and advisories for most Compaq products.
   http://www1.itrc.hp.com/service/home/compaqMain.do

» Debian: Security Information
   Details of current and archive security advisories. Includes mailing list and a security FAQ.
   http://www.debian.org/security/

» FreeBSD
   Advisories, mailing lists, tips, tricks, guidelines, links.
   http://www.freebsd.org/security/

» FreeBSD Patches FTP Site
   Security advisories and patches.
   ftp://ftp.freebsd.org/pub/FreeBSD/CERT/

» HP-UX Patch Additional Information
   Patch Security Matrix, list of obsolete patches, patch checksums.
   ftp://us-ffs.external.hp.com/export/patches/

» HP: IT Resource Center
   Americas/Asia-Pacific site offering online support. Includes knowledge base, patches, drivers and security mailing lists.
   http://www2.itrc.hp.com/

» HP: Tru64 Unix
   Security advisories and associated patches.
   http://h30097.www3.hp.com/unix/security-download.html

» KDE
   Only if you've built KDE yourself; otherwise probably available from your Linux distribution vendor's patches directory. Note this is an FTP site.
   ftp://ftp.kde.org/pub/kde/security_patches/

» Microsoft
   Download security updates, service packs, and anti-spyware tools for Windows.
   http://www.microsoft.com/downloads/en/

» Microsoft Security
   Microsoft-product-related security headlines and bulletins.
   http://www.microsoft.com/security/

» NetBSD
   Advisories, patches, links.
   http://www.netbsd.org/Security/index.html

» OpenBSD Release Errata
   Advisories and patches.
   http://www.openbsd.org/errata.html

» OpenBSD Security
   Advisories and information.
   http://www.openbsd.org/security.html

» Oracle
   Patches and other security information.
   http://otn.oracle.com/deploy/security/alerts.htm

» Red Hat Linux Errata
   Security advisories and updates (patches) for all supported versions.
   http://www.redhat.com/security/

» SCO
   Security information for Caldera OpenLinux, OpenServer, OpenUnix, and UnixWare.
   http://www.sco.com/support/security/

» SCO Unix System Security Enhancement Area
   Advisories and patches. Note this is an FTP site.
   ftp://ftp.sco.com/pub/security/sse/

» SGI: IRIX
   Security advisories and patch downloads. Includes mailing list.
   http://www.sgi.com/support/security/

» SuSE Linux
   Patches directories for all supported versions, plus a security announcements list (English).
   http://www.suse.de/en/support/download/updates/

» Sun Microsystems
   Security and recommended patches for Solaris: patch clusters and individual patches.
   http://sunsolve.sun.com/pub-cgi/show.pl?target=patches/patch-access