Wonderful story about a prank that Tom Lehrer played on the NSA and which took 60 years to be discovered:
https://bsky.app/profile/opalescentopal.bsky.social/post/3luxxx27nos23
Sent to me by Wendy M. Grossman (npub1gsa…q4wj) :
Wendy M. Grossman (npub1gsa…q4wj)/114930270736764439">https://mathstodon.xyz/Wendy M. Grossman (npub1gsa…q4wj)/114930270736764439
Thank you WG !!