News for hackers. Stuff that matters.
Re:Solving the Australian Signals Directorate cryptography c... by jameshart on Sunday September 04, 2022 @09:16AM (#32712709)
For clarification, this appears to be a cryptography-challenge coin, not a cryptography challenge-coin.
Re:Solving the Australian Signals Directorate cryptography c... by goldenkey on Sunday September 04, 2022 @03:05PM (#32716554)
To elaborate, a challenge-coin would be awarded for achievement or entry into a prestigious group. The coin is usually decorative but contains no challenges in itself.

In this case, the coin contains challenges, and anyone can purchase it - rather than it being awarded.