Science & technology | Computer viruses

The good, the bad and the ugly

Can computer viruses ever be a force for progress?

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IN THE wild west of the online world, the archetypal baddies are computer viruses and worms. These self-replicating programs are notorious for wreaking havoc in the systems of unwary users. But, as in the west, not all gunslingers wear black hats. Some virus writers wish their fellow users well, and have been spreading viruses that are designed to do good, not harm.

This article appeared in the Science & technology section of the print edition under the headline “The good, the bad and the ugly”

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