The US-american Computer Emergency Response Team.
New attacks will be published here and above all they publish regular messages about security problems of practical relevance.
The FBI publishes the 20 most severe Internet security Holes under Windows and Linux.
Secunia monitors security vulnerabilities in more than 10,000 products.
This FAQ deals with a large amount of security questions about WWW server's operation and the use of WWW browsers.
JavaScript, ActiveX and Co make surfing easier but unsecure. Available in German
New OpenSSH patches and security information
How to personal firewalls can be tricked. Only available in German.
How do SQL injection attacks work and what can I do against them?
A very informative site about the differences between good and bad encryption, and how they can be discovered by the non-expert.
An important site, especially for internet novices.
It explains the so-called hoaxes - faked virus alerts, which are broadcasted via email.
Interesting and amusing!
About Computer viruses, which are none and other fake messages and rumors. Only available in German
Overview about the legal position of worldwide use, import and export of cryptographic products.
A valuable site!
An extensive collection of resources regarding internet law.
Good and detailed link collection about internet law.
Only available in German.
Interesting articles about dissuasions in the Internet.
Only available in German
Overview about security aspects and the resulting risks
A collection of tools for network analysis
On the basis of OpenSSL it is investigated, how fast administrators close known security holes.
Here you find product's passwords of several producers.
Here you can see the server software and operating system of particular WWW servers. Really interesting!
Service overview and network port requirements for the Windows Server system
Forgot your NT admin password?
New installation? - Not with this tool!
A Free Win32 Telnet/SSH Client
You look for a specific RFC, or a specific content in RFC's? This site will find the right thing for you.
This is a collection of academic reference books for information technology.
The Apache Software Foundation
A collection of free top-class Visual Basic program examples.
List of anti-virus software producers. Available in German.
Only in German.
Everything about IP protocols.
This site provides an overview on measurement related software and publications.