In a manner relating to or using cryptoanalytic methods or analysis.
From 'cryptoanalytic' plus the adverbial suffix '-ally'. This adverb allows writers to describe actions performed through the lens of code-breaking methodology, a technical term from 20th-century security and intelligence literature.
Adding '-ally' to technical terms like this shows how language evolves to let us describe specific approaches: something done 'cryptoanalytically' isn't just analysis—it's specifically about breaking codes using proven techniques.
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