Twenty free and effective infosec tools

We asked readers to name the free tools they find most useful in their daily work as infosec practitioners. Here are 20 that stand out.
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Maltego

Paterva develops this open source intelligence and forensics app, designed to deliver a clear threat picture for the user's environment. It will demonstrate the complexity and severity of single points of failure as well as trust relationships that exist within the scope of one's infrastructure. 

It pulls in information posted all over the Internet, whether it's the current configuration of a router on the edge of the company network or the current whereabouts of its vice president. 

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