"At this writing, the Jargon File claims the incident actually happened, at Toronto in 1979 or 1980, and that the sysadmin on duty was actually interviewed. The account doesn't provide enough details to track down an independent account, however.

Current University of Toronto sysadmins have expressed skepticism. For one thing, in almost all versions of the story, including the ostensibly documented one in the Jargon File, the computer is a VAX; at the time a VAX would have been a very unusual platform for this kind of data acquisition (they used PDP-11s). The Toronto zoology department has never been licensed to work with primates; the only section of the university that could have done experiments of this nature was the School of Medicine. Investigation continues."