Ключевые слова: banking, big data, block chain, business, buy, cloud computing, commerce, computer, computer network, concept, credit, currency, data center, digital, ecommerce, finance, firewall, global communication, graphic, illustration, information, intercepting, internet, internet cafe, laptop, lock, mobile phone, money, network security, network server, online, password, pay, payment, protect, protection, safe, security, security system, shopping, stealing, technology, turquoise, virtual reality, web, wireless technology,