| Trojaner-Board | Forum, das sich mit Trojanern, Viren und Spyware und deren Bekämpfung beschäftigt. |
| Sicher im Netz | Beratungsportal für Online-Sicherheit |
| Agax | free Apple Macintosh antivirus program |
| F-Prot Virus Database | A Virus database which is updated several times a week. Also available in finnish and swedish. |
| Computer Security Portal | News portal dealing with computer security themes |
| ssdeep | Recursive computing and matching of Context Triggered Piecewise Hashing (Fuzzy Hashing). Useful for Digital forensic. |
| Trojaner-Info | Hilfe und Informationen bei Trojanischen Pferden, Computerwürmern und Computerviren. |
| Jotti | You can upload a suspicious file and it will be immediately scanned by several virusscanners |
| Kaspersky | Well known developer of antivirus software |
| McAfee | Anti-Virus-Programs and Firewalls for purchase. |
| Viruslist.com | Virus and malware information portal |
| WindowSecurity | Webportal dealing with Windows and Internet Security matters. |
| Symantec Security Scan | Let them try to spy your computer to find out how save you are. |
| Heise-Security | Aktuelle Meldungen zum Thema Computersicherheit |
| klicksafe | Auf dieser Seite werden einsteigerfreundlich die Risiken der Computer- und Internetnutzung aufgezeigt. |
| Stunnel | Free program to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows |
| CA Cert | Community driven, Certificate Authority that issues certificates to the public at large for free. |
| Sophos | Software and appliance solutions to protect networks from viruses, Trojans, worms, spyware and spam |
| Symantec Protection Side | Recent Virus Warnings and removal tools on the page of one of the leading anti-virus research organizations. |
| Zfone | Free download of the VoIP phone software of Phil Zimmermann which lets you make encrypted phone calls over the Internet |
| Avast | Antivirus software for purchase or free download for home users for non-commercial use |
| Portknocking Firewall | With this free program you can adjust your computer to open ports just on demand of permitted clients. |
| AntiVir | Kostenloses Virenprogramm zum privaten Gebrauch, das etwa 70.000 Viren erkennt und entfernt. |
| Internet Identität | Arbeitsgruppe zum Identitätsschutz im Internet mit Informationen und Reports |
| GFI | Software developer for security and messaging software |
