Ключевые слова: business, communication, confidentiality, copy space, crime prevention, cyber crime, data, defect, device, hacking, infection, information leakage, information management, information security, internet, key, keyword, leakage, lock, management, mobile phone, nanjing lock, net, passcode, password, personal information, prevention, privacy, protect, protection, security, smartphone, spam, system, technology, text space, unattended, unauthorized access, virus, vulnerability, white background,