Forget Software—Now Hackers Are Exploiting Physics
Practically every word we use to describe a computer is a metaphor. “File,” “window,” even “memory” all stand in for collections of ones and zeros that are themselves representations of an impossibly complex maze of wires, transistors and the electrons moving through them. But when hackers go beyond those abstractions of computer systems and attack their actual underlying physics, the metaphors break.
Over the last year and a half, security researchers have been doing exactly that: honing hacking techniques that break through the metaphor to the actual machine, exploiting the unexpected behavior not of operating systems or applications, but of computing hardware itself—in some cases targeting the actual electricity that comprises bits of data in computer memory. And at the Usenix security conference earlier this month, two teams of researchers presented attacks they developed that bring that new kind of hack closer to becoming a practical threat.
