The Australian Signals Directorate has released 50k 50c coins with secret codes to mark the cyber-spy agency's 75th anniversary. The coins contain messages hidden by four layers of encryption, all of which we've been able to decode. However, there's a fifth code and we haven't been able to find it. If you have an answer, and you're happy to part with the info, please let us know.

Katie Elizabeth Mathew, FlightTraining.com.au, and the Perils of Dropping a Domain
What would you do if you saw somebody drop a wallet in the street? What about if they left a suitcase full of cash on



