"It is the world's most used penetration testing software".
the hackers are using it, it is a great teaching tool, and of course we would use it in some of our testing on your systems to see if we can penetrate and make the machine what is termed as "pwned" an offshoot of owned. Hackers have a pride and show off ability as well. That is what they do.
Let us know if we can test your systems so that you know for sure how they operate with a specific attack, rather than not knowing and being unaware.