It was in 1989 when Clifford Stoll first published The Cuckoos Egg, the best ever book written on the subject of Cyber (then IT) crime. The book was possibly the first ever serious factual account of cyber crimes, electronic incursion and state sponsored hacking. However, the presented events in this fine read were detected from, what amounted to a tiny accounting deficiency of just 75-cents of unaccounted Unix computer time. Now hence 31 years ago since the publication of this amazing piece of computer-crime history, we may compare its observed discoveries to events derived from todays landscape of complex computerisation.”]
Source: https://informationsecuritybuzz.com/articles/astronomer-to-cyber-wizardry/