Substitution Cipher: Weakness
Fun Class Activity: Decrypt the following:
Jvl mlwclk yr jvl owmwez twp yusl w zyduopjdcluj mqil zydkplmr. Hdj jvlz tykilc vwkc jy
mlwku jvl wkj yr vwsiquo, tvqsv vlmflc mlwc
jvlg jy oklwjulpp. Zyd vwnl jvl fyjlujqwm jy cy
jvl pwgl. Zydk plsklj fwpptykc qp: JYWPJ
Interesting observations: what frequent English word could jvl be hiding? (Note how frequent it is!)
Same about yr and jy.
You can use the following website to count the letter frequency in the above text to assist you with the frequency analysis: https://www.dcode.fr/frequency-analysis.
These notes by Miriam Briskman are licensed under CC BY-NC 4.0 and based on sources.