Nir is employed at NCR Corporation as Enterprise Security Architect of NCR Retail, and also works as Co-Founder and CTO of his start-up company, Crowdome. Before the acquisition of Retalix by NCR, he was Chief Security Officer of R&D at the company. As part of his previous positions in the last decade, he worked as Chief Security Architect, Senior Technology Consultant, Application Security Consultant, Systems Infrastructure Security Consultant, and a Technological Trainer. During these positions, Nir was not only consulting, but also performing hands-on activities in various fields, i.e. hardening, penetration testing and development for personal internal applications. In addition, Nir released an open source anti-defacement tool called AntiDef and has written a publication about QRbot, an iPhone QR botnet POC he developed. Nir has a BSc in computer science but his knowledge is based mainly on cowboy learning and information sharing with the techno-oriented communities.