I’ve found today 2 resources which are connected to good old Google Hacking Database : Googlehacks and Google Hacking Honeypot.

Evolution is a program that can be used to determine the relationships and real world links between people, systems and internet resources. Passive information gathering and intelligence.

Tenable’s Research group recently introduced a highly accurate form of operating system identification. This new method combines input from various other plugins that perform separate techniques to guess or identify a remote operating system.

I bet you never knew that one reliable resource of dictionary based password attacks is the US Census bureau.