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Pretext calling is defined as a deceptive means of obtaining personal information. Pretext callers could possibly contact bank employees, posing as their customers, to access personal account information and status. Information obtained from pretext calling is usually sold to debt collection services, attorneys, and private investigators to use in court proceedings. Identity thieves also engage in pretext calling to obtain personal information to create fraudulent accounts and credit cards.
In cryptography, ciphertext or cyphertext is the result of encryption performed on plaintext using an algorithm, called a cipher.oth Alice and Bob must know the choice of key, , or else the ciphertext is useless. Once the message is encrypted as ciphertext, Alice can safely transmit it to Bob (assuming no one else knows the key). In order to read Alice's message, Bob must decrypt the ciphertext using which is known as the decryption cipher, .