Ashish Bhangale has more than 4 years of experience in Network and Web Application Security. He is currently working at Pentester Academy as a Senior Security Researcher. He has previously worked with various law enforcement agencies as a Digital Forensics Investigator. He is the author of the Command Injection & Arbitrary File Upload Vulnerable Web Application OS, a collection of vulnerable OSes, available at sourceforge . He loves to work on source code review, testing new tools & automation using Python.