Delivery notices from the post office, messages from out-of-touch friends and headlines from seasonal sporting events look innocent enough when they arrive in emailform.
But they all can bear malicious links ready to unleash computer-enabled chaos with just a single click.

Most of us have received the horrified e-mail: "My e-mail was hacked!!! I'm so sorry!" Some of us have even sent one ourselves. But how exactly do e-mail viruses spread? And what should you do if one ensnares you?

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