Ключевые слова: advice, attack, black, blackboard, business, chalk, chalkboard, communication, concept, crime, cyber, data, database, defense, encryption, hacker, handwriting, handwritten, info, information, inspiration, internet, knowledge, learning, management, marketing, message, motivation, network, online, outlined, password, privacy, promotion, protect, protection, research, safe, search, secure, security, service, software, storage, structure, virtual, web, webpage, website, wood, word,