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Why do we make our entire world so vulnerable to hackers?

The heat is on for cyber experts after freezer attacks

Letters to the Editor. Illustration: Paul Scott
The Irish Times - Letters to the Editor.

Sir, – I am by no means a cyber expert, and I am more a fan of The Da Vinci Code than of any computer code, but I have two questions about the attacks on supermarkets’ freezers last week.

Firstly, who designs freezers which can double as ovens, judging by the temperatures imposed by the hackers? Couldn’t there be an upper limit so that the only possible damage would be turning them off?

Secondly, is it imperative to have all our devices, appliances and gizmos attached to the internet, deepening our vulnerability and broadening the targets for hackers? – Yours, etc,

TERESA GRAHAM,

Tramore,

Co Waterford.