When you connect hospital drug pumps to the Internet, they're
hackable -- only surprising people who aren't paying attention.
Rios says when he first told Hospira a year ago that
hackers could update the firmware on its pumps, the company "didn't
believe it could be done." Hospira insisted there was "separation"
between the communications module and the circuit board that would make
this impossible. Rios says technically there is physical separation
between the two. But the serial cable provides a bridge to jump from one
to the other.
An attacker wouldn't need physical access to the pump because the
communication modules are connected to hospital networks, which are in
turn connected to the Internet.
"From an architecture standpoint, it looks like these two modules are
separated," he says. "But when you open the device up, you can see
they're actually connected with a serial cable, and they"re connected in
a way that you can actually change the core software on the pump."
An attacker wouldn't need physical access to the pump. The
communication modules are connected to hospital networks, which are in
turn connected to the Internet. "You can talk to that communication
module over the network or over a wireless network," Rios warns.
Hospira knows this, he says, because this is how it delivers firmware
updates to its pumps. Yet despite this, he says, the company insists
that "the separation makes it so you can't hurt someone. So we're going
to develop a proof-of-concept that proves that's not true."
One of the biggest conceptual problems we have is that something is
believed secure until demonstrated otherwise. We need to reverse that:
everything should be believed insecure until demonstrated otherwise.
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