Ключевые слова: advertisement, background, blue, card, closeup, communication, computer, concept, danger, data, digital, electronic, firewall, hand, holding, information, internet, invitation, job, key, male, man, message, network, note, office, paper, password, people, person, presenting, privacy, professional, protect, protection, safe, safety, secret, secure, security, showing, sign, space, success, surveillance, system, technology, text, visiting, web,