French crypto history expert Jean-François Bouchaudy has found something very rare: three original messages encrypted with an M-209 cipher machine. One of these is still unsolved.
Israeli codebreaker and reader of this blog, George Lasry, has solved cryptogram #42 from my top 50 list.
The M-209 is a small and robust encryption machine used by the US Army in World War II. Although several cryptologists have developed powerful methods to break the M-209, one series of messages is still unsolved.
Wer steckte hinter dem Attentat auf den kongolesischen Politiker Patrice Lumumba? Ein belgischer Codeknacker lieferte wichtige Hinweise.