Ключевые слова: access, background, block, blocked, blue, burglar, closed, concept, copy, defense, design, door, encrypt, encryption, equipment, glossy, gray, guard, heavy, idea, isolated, key, keys, lock, metal, negative, padlock, pillage, portable, prevent, prevention, protect, protection, protocol, robbery, safe, safeguard, safety, secure, secured, security, shackle, shield, shiny, silver, space, steel, text, theft, thief,