| Network Security Forum | Forum dealing with Security, Linux, Exploits, Wireless and Certifications |
| cgi security | Portal about web application security |
| Stunnel | Free program to encrypt arbitrary TCP connections inside SSL (Secure Sockets Layer) available on both Unix and Windows |
| PhishTank | Collaborative clearing house for data and information about phishing on the Internet. Provides open API for developers. |
| Haage & Partner | Hersteller von Software zur Datenrettung, Logfileanalyse sowie Serversoftware und Tools |
| Zfone | Free download of the VoIP phone software of Phil Zimmermann which lets you make encrypted phone calls over the Internet |
| klicksafe | Auf dieser Seite werden einsteigerfreundlich die Risiken der Computer- und Internetnutzung aufgezeigt. |
| Information security | Computer and internet security news portal. |
| ENISA | Organization of the European Union, the EU Member States and business community to prevent information security problems |
| APWG | The Anti-Phishing Working Group is a global pan-industrial association focused on fightting fraud and identity theft |
| Solved captchas | Overview of widely used captchas and information on their effectivity and weaknesses. |
| Shadows on the web | Information and statistics on bot nets and Internet malware |
| stobadwar | partnership to protect Internet and computer users from threats to privacy and security caused by bad software. |
