News for hackers. Stuff that matters.

A comment on Hard, Not Soft, Kill Switches. Parent comment

Re:Hard, Not Soft, Kill Switches by mbrutsch on Friday September 25, 2015 @07:53AM (#10277584)
Devices that function when the power has been disconnected would be wonderful energy-saving devices.
[ Parent | on HN ]
Re:Hard, Not Soft, Kill Switches by Mister_Snuggles on Friday September 25, 2015 @10:33AM (#10278359)
These are signal pins, not power pins. The device is still receiving power when the switch is "off", all the switch does is provide a signal to the pins that tell it to disable itself.
[ Parent | on HN ]
Re:Hard, Not Soft, Kill Switches by mortenlarsen on Friday September 25, 2015 @11:35AM (#10278723)
Also signal input can in certain cases power devices[1].

[1] https://youtu.be/1jOJl8gRPyQ?t=502

[ Parent | on HN ]
Re:Hard, Not Soft, Kill Switches by nickpsecurity on Friday September 25, 2015 @08:53PM (#10281641)
Which still allows potential side-channel attacks in circuitry.
[ Parent | on HN ]