Modern web applications are becoming so complex that it is virtually impossible to check every possible attack vector and ensure it is not vulnerable without using an automated tool, such as Netsparker Web Application Security Scanner. The same applies for the modern trend of web application vulnerabilities, some of them can only be reproduced using automated means. Hence why the more complex a web application is, the bigger the need to use an automated web vulnerability scanner to identify vulnerabilities before malicious hackers do.