Ключевые слова: address, background, cctv, check, closed, color, colorful, communication, connection, control, cyber, data, design, digital, fire, guard, icon, illustration, internet, isolated, lock, looking, mark, network, padlock, password, privacy, private, protect, protection, protocol, safe, safety, secure, security, set, sign, surveillance, symbol, system, video, wall, watching, web, website, zone,