Ключевые слова: access, background, black, blackboard, board, brick, chalk, chalkboard, cloud, computing, concept, danger, data, data security, design, diagram, digital, drawing, encrypted, encryption, firewall, handwriting, hardware, icon, idea, illustration, industry, information, infrastructure, internet, network, protect, protection, safeguard, safety, security, service, sketching, solution, symbol, technology, text, texture, virus protection, wall, write, writing,