Can you decrypt our computing joke using frequency analysis? The histogram shows E is the most common letter in English so the most common letter in the message is probably E. As it is a short message the least common letters are less likely to match their frequency exactly so try and guess words.
How common is each letter in English?
Can you read this joke?
Txhvwlrq Zkdw glg wkh frpsxwhu zruub prvw pljkw kdsshq dw Kdoorzhhq Dqvzhu D ebwh iurp d ydpsluh