I was going to respond with the story about how British WW2 intelligence were alarmed to find code words for the D-Day operation showing up as answers in a news

I was going to respond with the story about how British WW2 intelligence were alarmed to find code words for the D-Day operation showing up as answers in a newspaper crossword puzzle, quite coincidentally. But then I read that story again and it was not nearly so coincidental as was reported back in the day when I first heard about it. It's actually an interesting lesson in opsec. The compiler was physically close to soldiers preparing for the operation, and his pupils were filling in the grid with names they were hearing on the streets. So not really coincidental at all. https://en.wikipedia.org/wiki/D-Day_Daily_Telegraph_crossword_security_alarm?wprov=sfla1 https://en.wikipedia.org/wiki/D-Day_Daily_Telegraph_crosswor...