Live data from Hacker News

Apple's T2 chip will prevent hackers from eavesdropping on your microphone

techcrunch.com

11–20 of 159 posts

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#11

> The chip comes with a hardware microphone disconnect feature that physically cuts the device’s microphone from the rest of the hardware whenever the lid is closed Why do you need a chip for this? Can't you just break the circuit with a regular dumb physical switch? Or is this a much more complex problem than it first appears?

[deleted]

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#12
post #5

Earlier quoted context omitted.

Who controls the switch? You need an entire secure system distinct from the untrusted CPU - or a manual switch on the side. The latter goes against everything Apple believes in design wise.

What about a physical killswitch goes against Apple's design? The iPhone has always had a ringer/vibrate switch on its side since it was introduced. Obviously it doesn't do anything hardware-wise, but it's still a switch that disables some functionality.

[deleted]

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#16
post #5

Earlier quoted context omitted.

Who controls the switch? You need an entire secure system distinct from the untrusted CPU - or a manual switch on the side. The latter goes against everything Apple believes in design wise.

What about a physical killswitch goes against Apple's design? The iPhone has always had a ringer/vibrate switch on its side since it was introduced. Obviously it doesn't do anything hardware-wise, but it's still a switch that disables some functionality.

That has a common use case of not wanting your phone ringing in a meeting.

People expect their computers not to listen to them when not actively using the mic. Your switch is the program that records you, a second is redundant and confusing.

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#17
post #5

> The chip comes with a hardware microphone disconnect feature that physically cuts the device’s microphone from the rest of the hardware whenever the lid is closed Why do you need a chip for this? Can't you just break the circuit with a regular dumb physical switch? Or is this a much more complex problem than it first appears?

Who controls the switch? You need an entire secure system distinct from the untrusted CPU - or a manual switch on the side. The latter goes against everything Apple believes in design wise.

[deleted]

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#18
post #2

Why is it so hard to believe the headline?

Has Apple security record on electronics been ever broken? I don’t think so. If there is an exploit yet, at least it’s not publicly known and no-one has seen it for sale on the black market, so it would be in the millions. I’d say Apple is trustworthy as far as I’m concerned, perhaps not trustworthy enough if the threat model is Hillary-level politics, but trustworthy enough for a billion dollars business.

Many times, but usually patched. Thunderstrike USB exploit comes to mind.

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#19

Earlier quoted context omitted.

I'm suggesting the lid could control the switch, physically, as in when you close it the mic's circuit is broken.

Yea that could work. I think this is cheaper for them surprisingly enough. Switches are expensive.

Expensive and failure-prone!

Re: Apple's T2 chip will prevent hackers from eavesdropping on your microphone

#20
post #2

Why is it so hard to believe the headline?

Has Apple security record on electronics been ever broken? I don’t think so. If there is an exploit yet, at least it’s not publicly known and no-one has seen it for sale on the black market, so it would be in the millions. I’d say Apple is trustworthy as far as I’m concerned, perhaps not trustworthy enough if the threat model is Hillary-level politics, but trustworthy enough for a billion dollars business.

>Has Apple security record on electronics been ever broken

Absolutely. It was possible to trigger the mic/camera on older Macbooks without turning on the green LED. This led to people being spied on without their knowledge (by script kiddies, not nation-states). More recently, there's the unlocking of the San Bernardino shooters' iPhones.

Post reply on HN