Graham Cluley authored two well known text adventure games in the late 80s-90s, Jacaranda Jim and Humbug. He also authored an action game, Wilf II. Later he became a well-known computer security consultant, authoring the original version of Dr Solomon's Anti-Virus Toolkit. He is still consulted in computer security related news articles to this day.
Official Graham Cluley website
Graham Cluley's Mobygames page
Graham Cluley's Wikipedia page
Games developed and/or published by Graham Cluley
Humbug (1994)
Wilf II (1991)