DHS has few critical cyber security announcement few days ago. Some technical articles may bring the practitioner attentions. Do you read technical article “Threats to Precision Agriculture” yet? My personal opinion is that the prediction of cyber attack scenario not only happen in agriculture. It may have happen in aero industry. Real-time kinematic (RTK) positioning is a technique used to enhance the precision of position data derived from satellite -based systems. The GPS system is now considered a “crosssector dependency” for the Department of Homeland Security’s (DHS) 16 designated critical infrastructure sectors. GNSS is vulnerable to jamming and natural interference. When GNSS is denied, PNT information can be seriously affected in ways that increase risks to the safety of navigation. It is hard to avoid Microsoft operating system integrate to critical system infrastructure nowadays. Microsoft formalized Patch Tuesday schedule and zero day are the concerns of the world includes airline industry. What do you think? It looks that virtual patching service is the first choice in all IT industry coming year.