: Developers use Apache JMeter or custom scripts to find where a system fails, such as a router maxing out its CPU or a firewall rule that collapses under load.
: Using a stresser on a network you do not own or have explicit permission to test is illegal and can lead to criminal prosecution. stresser source code
: Security teams simulate DDoS attacks to verify if their mitigation tools and Web Application Firewalls (WAF) are actually effective. The Legal and Ethical Divide : Developers use Apache JMeter or custom scripts