I'm kind of mixed about this one. On the one hand, if the tools were written specifically for the purpose of carrying out illegal activity, then I can agree with the arrest. Seems to me the tools are called "security" tools.

If they're security tools and have an original purpose other than hacking, I think it's ridiculous. It would be like arresting the head of Ford Motor Company because his cars are used by bank robbers. At this point, all I can see is trouble for security programmers.