Father Christmas
... that in 1988, a NASA network was infected with a computer worm which sought to send all users a message from Father Christmas?
... that in 1988, a <a href="./NASA" id="mwAjk" rel="mw:WikiLink" title="NASA">NASA</a> network was infected with a <a href="./Computer_worm" id="mwAjo" rel="mw:WikiLink" title="Computer worm">computer worm</a> which sought to send all users a message from <b id="mwAjs"><a href="./Father_Christmas_(computer_worm)" id="mwAjw" rel="mw:WikiLink" title="Father Christmas (computer worm)">Father Christmas</a></b>?