10 top open source security testing tools
A few quick caveats: All the open source security testing tools listed can be used both lawfully and unlawfully. Make sure that you stay on the right side of the law. If you're not sure whether a given usage is legal or not, talk to a lawyer. If you're still not sure after that, don't do it. Also, when using applications or systems in unexpected ways, sometimes, downtime can occur. Have a plan in case something important goes offline. Lastly, testing well requires a lot of training and practice. Don't expect internal efforts to have the same results as a specialist.
That said, let's look at 10 security testing tools routinely used by testers. Since it isn't possible to cover the thousands of tools out there, the focus here is on tools that do the following...