Reply To: 8b
The Empty Vault › Forums › Bureau of Security and Signals Intelligence Forum › 8b › Reply To: 8b
5th December 2022 at 12:07 pm #87434
From the helpful comment given by Madness, it could be some version of the porta cipher called the quagmire IV to be specific.
[Just to be clear, posting this does not mean it is right! Harry
ps (or wrong!)]