The main problem with the encryption method is that it can be
easily deciphered using frequency analysis. Frequency analysis is effective to
break down the encryption method because all the letters of the alphabet are in
order, meaning that when one letter code has been cracked, all the others are
also easy to crack, further leading to its inefficiency.
In order to prevent this from happening, the use of symbols,
different languages and various methods of encryption should be applied. This
will result in the reduction of deciphering the encryption method using the
frequency method or at least, make it more difficult.
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