The nation spends billions of dollars on cybersecurity measures, and yet we seem unable to get ahead of this problem. Why are our computers so hard to protect? An experience with a house cat provided insights. I am allergic to cats. My daughter came home, cat in hand, and I had to find a way of confining Pounce to a limited area. Everything I tried to confine Pounce worked for a little while but eventually failed as he found a way past my newest security barrier — just as hackers eventually find their way through the cybersecurity barriers erected to stop them.

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