Here's a link to "The 2020 hacker report" by HackerOne https://www.hackerone.com/lp/resources/2020-hacker-report https://www.hackerone.com/lp/resources/2020-ha

Here's a link to "The 2020 hacker report" by HackerOne https://www.hackerone.com/lp/resources/2020-hacker-report https://www.hackerone.com/lp/resources/2020-hacker-report I've looked through it and there's some nice information on how hacker industry emerged and grew into what it is now, talks about money earned by ethical hacking as well.