As part of a top-secret, joint operation between the South African Police Security Branch and the Bureau for State Security (and its successor, the National Intelligence Service), police spy and National Union of South African Students executive member, Craig Williamson succeeded in infiltrating the International University Exchange Fund, gathering both tactical and strategic information. Funds were also re-directed, some of which were then used to fund intelligence operations against the South African Communist Party and to buy Daisy Farm for the secret training of Daisy Spy Ring members. Williamson was unmasked as a spy in 1980 and the existence of Operation Daisy exposed.