Internet scams grow more sophisticated as consumers become savvier about avoiding them. Some are moving off-line. Example: You receive a phone call from an imposter technician who says a virus on your computer is compromising their network. Resolving the problem requires following their over-the-phone instructions and entering code, which then hijacks your computer. Another involves imposter emails from FedEx, DHL, or UPS indicating a package could not be delivered. Instructions include clicking a virus-laden link to provide personal information.