ONE small computer bug and it's a big disaster as the world shuts down or so it seemed on the news reports.

It has been decades since the blue screen of death was a common feature of our routine computer day but it has returned with a vengeance.

This event was a hassle but it was unintentional, so what happens if there is an intentional attack?

Most people have only a little cash available so they might run out of food in a few days and even worse their streaming services could be affected.

We need to both, increase our security levels and, to decrease our reliance on the online life we have built for ourselves. We could turn our computers off every Thursday and practise.

It might also so be a good time to put a few dollars under the mattress.

Dennis Fitzgerald, by email