As a disgruntled employee of XYZ Inc. He wanted to take revenge. For that purpose, he created a malicious software that automatically visits every page on the company's website, checks pages for…

As a disgruntled employee of XYZ Inc. He wanted to take revenge. For that purpose, he created a malicious software that automatically visits every page on the company's website, checks pages for important links to other content recursively, and indexes them in a logical flow. By using this malicious software, he discovered all sensitive information about the organization. What is the type of software that Rock developed?