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Because that's how they're designed to work.

When you open an email containing a virus - it's first 'task' is to replicate itself as many times as possible. Not only will it infect your own computer but, using your email address book, it'll try to send itself to each of your contacts. The problem is - people receiving an email from you will not normally worry about it - as you're known to them.

This makes email viruses easier to spread than those hidden in web pages.

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14y ago

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