Cybersecurity expert, mature man, glasses, short black hair, formal wear, white shirt, black tie, standing in front of a large screen displaying network diagrams, fingers on hips, confident posture, modern office background, cityscape through window, blue and white hues, neon lights, complex network architecture, routers, firewalls, servers, cables, wires, futuristic ambiance, high-tech atmosphere, 3/4 composition, softbox lighting.