| F-Prot Virus Database | A Virus database which is updated several times a week. Also available in finnish and swedish. |
| Norton Virus-Database | Large Virus Database with an estimation of danger level.
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| Trojaner-Board | Forum, das sich mit Trojanern, Viren und Spyware und deren Bekämpfung beschäftigt. |
| SenderBase | Report of spam mail traffic and virus traffic. |
| Viruslist.com | Virus and malware information portal |
| Heise-Security | Aktuelle Meldungen zum Thema Computersicherheit |
| SecurityFocus.com | Lists concrete security problems of programs. Not only securityexperts but all end user should take a look here. |
| Jetico | Securitytools for download: encryption, firewall and diskwiping softwaretools. |
| Sicher im Netz | Beratungsportal für Online-Sicherheit |
| TrueCrypt | Free open-source disk encryption software for Windows XP/2000/2003 and Linux |
| Cexx | Website with tipps and tools against spam and spyware. |
| Trifinite | Website about Bluetooth Security Vulnerabilities and Bluetooth Projects giving download, blog and information |
| The bunker | Ultra secure computer hosting |
| Internet Identität | Arbeitsgruppe zum Identitätsschutz im Internet mit Informationen und Reports |
| CA Cert | Community driven, Certificate Authority that issues certificates to the public at large for free. |
| GNU Privacy Guard | Die freie Software-Implementierung erlaubt die Verschlüsselung und Signierung von Daten und Kommunikation. |
| IT-Observer | Information technology portal with news and downloads focussed on network technology and security topics |
| Spamhaus | Tracks Spammers, provides anti-spam protection for Internet networks and works to identify and pursue spammers worldwide |
| Computer Security Portal | News portal dealing with computer security themes |
| eicar | Organization to unite efforts against writing and proliferation of malicious code |
| Hack FAQ | Basic information about the underlying mechanics which are used to attack computers. |
| WindowSecurity | Webportal dealing with Windows and Internet Security matters. |
| Xatrix | Computer security news and information portal. |
| Trojaner-Board | Forum, das sich mit Trojanern, Viren und Spyware und deren Bekämpfung beschäftigt. |
| Firewall.cx | Networking and security news and forums |