Should I be concerned about cyber security and where can I start?
The threat of cyber crime is a very real one. However, there is a big difference between being sufficiently concerned that you take action and being so terrified that you behave irrationally or do nothing at all.
The problem with fear is that it sometimes drives the wrong behaviour. Faced with a predator, our instinct can be flight rather than fight. Cyber crime is not a challenge from which to run away or bury our heads in the sand and hope the aggressor picks on someone else.