James Kist is a senior consultant for Icons Inc. He has more than 15 years experience in information technology. He regularly conducts penetration tests and vulnerability assessments against various types of systems and networks. The biggest issue that I see with web applications is lack of proper input validation. He says the biggest issue is not validating the input properly and keeping sensitive information away from unauthorized users. Kist: “A lot of things that organizations dont think of are related to newer technology such as wireless or voiceover IP””]
Source: https://www.cuinfosecurity.com/james-kist-podcast-transcript-a-545