2What is Crowd Testing and Why is It So Important? What is crowd testing? Crowd testing refers to the practice of outsourcing software testing to a large group of people, usually over the internet, who have a diverse range of devices, operating systems, and locations. 4What is Security Testing in QA & Why is it So Essential What is security testing in QA? In today's world, where cyber threats are constantly evolving, ensuring application security is critical. Security testing in QA is a process of verifying the security level of an application and identifying potential security flaws.