Ibn 'Adlan
... that Arab cryptologist Ibn 'Adlan wrote about the cryptanalysis of ciphers with no space symbol, three centuries before it was first done in the West by G. B. Porta?
... that Arab cryptologist <b id="mwAWo"><a class="mw-redirect" href="./Ibn_'Adlan" id="mwAWs" rel="mw:WikiLink" title="Ibn 'Adlan">Ibn 'Adlan</a></b> wrote about the <a href="./Cryptanalysis" id="mwAWw" rel="mw:WikiLink" title="Cryptanalysis">cryptanalysis</a> of <a href="./Ciphertext" id="mwAW0" rel="mw:WikiLink" title="Ciphertext">ciphers</a> with no space symbol, three centuries before it was first done in the West by <a href="./Giambattista_della_Porta" id="mwAW4" rel="mw:WikiLink" title="Giambattista della Porta">G.<span id="mwAW8" typeof="mw:Entity"> </span>B. Porta</a>?