An artist has revealed one final clue to help codebreakers crack the message behind his 30-year-old sculpture. Jim Sanborn built the copper monument, known as Kryptos, outside the CIA headquarters in Langley, Virginia, in 1990. Kryptos was first created by Mr Sanborn alongside retired CIA cryptographer Edward Scheidt. 'WW' refers to the head of the intelligence agency when the sculpture was installed, William Webster, who was given a key to help decipher the code by Mr Sanborn. But he said he feared the final passage would not be cracked before he died.

Source: Daily Mail January 30, 2020 09:28 UTC