大象传媒 Radio 4 - The Long View, John Thurloe, Cromwell's postmaster, and the interception of mail, The interception of mail - Cipher relating to Bernard Desjean, Baron de Pointis, the Marquis de Seignelay and the siege of Londonderry, June 1689

The Long View John Thurloe, Cromwell's postmaster, and the interception of mail The interception of mail

Ciphered letters from the British Library

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Letter book of John Wallis, ciphered letters with deciphering and keys. British Library.

The Long View—John Thurloe, Cromwell's postmaster, and the interception of mail

Today's debates about online privacy have 17th-century precedents. With Jonathan Freedland

大象传媒 Radio 4