"Network World - San Francisco -- How bad can cyberattacks get? How about burning the internal components of a machine, whether PC or Mac, to a crisp so there's no thought of it being recoverable? That's what security vendor CrowdStrike showed could be done to an Apple Mac OS X today at the RSA Conference.":
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www.networkworld.com/new ··· 14-02-27Since this attack appears to require that a firmware update be installed, people who verify that suggested updates are really from Apple are probably immune.