What's Cypersecurity all about?

"Vaccine research patent details stolen by hackers"
"Filmstar blackmailed after criminals access photos on smartphone"
"Elderly widow has Internet bank account emptied by fraudsters"
"All computers at local hospital paralysed by computer virus"
"Government 'cannot find' documents stored on confidential database"
"Smart TVs can spy on you at home"
"Man arrested for having child pornography on his laptop 'didn't know how it got there'"
Headlines like these reflect one of the dangers of modern life, where electronic communication between computers, smartphones and other electronic devices forms the basis for innumerable social, commercial
and administrative activities.
The aim of cybersecurity is to prevent such undesirable events from happening. This book gives a gentle introduction to what this involves, by answering questions such as: What should one look out for? How do failures of cybersecurity arise? And last but not least, why is perfect cybersecurity so hard to achieve?