Cybersecurity expert, male, mature, serious facial expression, short brown hair, glasses, formal wear, suit, tie, standing, in front of a large screen displaying network diagrams, access control models, authentication protocols, authorization flows, data encryption methods, cloud infrastructure, virtual private networks, firewalls, intrusion detection systems, complex architecture, futuristic laboratory, neon lights, dark background, cinematic composition, high-tech ambiance, detailed textures.