Difference between an unstructured attack and a structured attack?

Structured attack

Come from hackers who are more highly motivated and

technically competent. These people know system

vulnerabilities and can understand and develop exploit code

and scripts. They understand, develop, and use sophisticated

hacking techniques to penetrate unsuspecting businesses.

These groups are often involved with the major fraud and

theft cases reported to law enforcement agencies.

Unstructured attack

Consists of mostly inexperienced individuals using easily

available hacking tools such as shell scripts and passWord

crackers. Even unstructured threats that are only executed

with the intent of testing and challenging a hacker's skills

can still do serious damage to a company.