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Sentinel-XLv 1.1
🛞🎯 Mission BriefingAct 1 • Stage 1.1 • +100 XP

Caesar Shift Ciphers & Frequency Attack

A Caesar cipher shifts each plaintext letter by an integer key k modulo 26. While simple to implement, the English alphabet has a distinctive frequency fingerprint: the letter 'E' appears ~13% of the time, followed by 'T' and 'A'. We can break any shift by analyzing the highest peaks.

🌟 Starting Stage (1.1)