Ключевые слова: access, art, bubble, business, check, code, color, colorful, confidentiality, contour, data, defense, design, encryption, guard, icon, illustration, internet, isolated, key, line, linear, lineart, lock, network, outline, padlock, password, privacy, private, protect, protection, protocol, safe, safety, secure, secured, security, server, shield, sign, speech, strong, symbol, virtual, vpn, web,