Primož Cigoj, young associate of our laboratory, has developed a new tool for detection of vulnerable websites at large scale under the mentorship of prof. dr. Borka Jerman Blažič. VulNET is unique newly developed tool for the vulnerability identification of the majority of the Internet sites with WCMS applications. With the usage of VulNET the users can overcome the deficiencies of the known tools. The tool is developed with an aim to review most of the WCMS on the Internet and to compare the security pictures collected in different timeframes. The key feature of the tool is the ability to perform automated, fast, and dynamic vulnerability scan of WCMS and the attached plug-ins on a large scale with in-built system that respect the ethic of the web scanning.