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Your Phone Can Be Snooped On Using Its Gyroscope
stephendavion (2872091) writes Researchers will demonstrate the process used to spy on smartphones using gyroscopes at Usenix Security event on August 22, 2014. Researchers from Stanford and a defense research group at Rafael will demonstrate a way to spy on smartphones using gyroscopes at Usenix Security event on August 22, 2014. According to the "Gyrophone: Recognizing Speech From Gyroscope Signals" study, the gyroscopes integrated into smartphones were sensitive enough to enable some sound waves to be picked up, transforming them into crude microphones.
Is it "Gyro" or "Yeero"?
Can we just succumb to the inevitable and work on building a list of the parts of a smartphone that can't be used to spy on you?
I'm thinking 'maybe the battery door'. Any other suggestions?
Another summary posted by trainee.
I'm going to assume most phones already have actual microphones, so how does this add any additional kind of insecurity? I'm going to assume most phones already have actual microphones, so how does this add any additional kind of insecurity?
Apparently the sound from your mic and the echo from your gyroscopes were both parsed by your speech-to-text converter. I guess it works better than we thought!
John
You are so much smarter for having found this information a week ago. It's practically useless now.
the gyroscopes integrated into smartphones were sensitive enough to enable some sound waves to be picked up, transforming them into crude microphones
Yeah, that's why I always stick my phone inside an empty potato chip bag when I'm talking to someone...
Basically an app can ask for permissions for the gyro only (if it even needs to) and be recording conversation.
Some of my co-workers were talking about this last week, and I think the effective issue was that while accessing the microphone requires special privileges to be granted to the application, no such privileges are required to access the gyroscope.
My phone doesn't have gyroscope, therefore I am safe from people listening in to my conversations.
"Gee boss, we need to spy on this guy! Any ideas how we can do it?
"Well he has a smart phone; maybe we can leverage that to our advantage?"
"Oh, I see what you are getting at; we'll hack the firmware so we can use the oscillations of the GPS to crudely and inaccurately record what he is saying!"
"Actually, I was thinking we might want to use the attached microphone which is, you know, designed to pick up sound..."
Researchers will demonstrate the process used to spy on smartphones using gyroscopes at Usenix Security event on August 22, 2014. Researchers from Stanford and a defense research group at Rafael will demonstrate a way to spy on smartphones using gyroscopes at Usenix Security event on August 22, 2014.
Why the redundancy? Post must be longer than 100 characters?
originally researchers analyzed the data in the following categories. wobbling or wiggling in android devices indicated stress patterns, while violent shaking concluded frustration or rage. Finally, a single impact for iPhone devices registered as a trip to the genius bar and an unpaid credit card bill.
Good people go to bed earlier.
They are currently able to recognize the spoken digits 1-9 correctly approximately 80% of the time. This is given a training data set from the same speaker and the same phone. Incredibly impressive, especially since it was done from a web browser and requires no special permissions or even knowledge from the user. For those of you that didn't read it. However, James Bond spy tool this is not yet...
I can't help but feel like there are gyroscopes involved in this process somehow...
- First they ignore you, then they laugh at you, then ???, then profit.
Apps request permissions for different pieces of hardware on a case-by-case basis. The average user might raise some eyebrows if an app that shouldn't need it wants to access your microphone, but access to gyroscope data might not even require user acceptance.
Basically an app can ask for permissions for the gyro only (if it even needs to) and be recording conversation.
Yeah, that's the thing. You don't need permissions for the gyro on Android and iOS, so any and all of the apps that you have on your phone or tablet could be using the gyro and you wouldn't know, except for an anomalous battery drain.
No one will ever bother exploiting this. Neither will anyone bother to exploit the red button attack or inferring audio from video recording. It's just too tricky to get these working in practice. Even with the gyroscope you get a crummy 100Hz frequency cap with terrible amounts of factors decreasing sound capture quality.
Basically an app can ask for permissions for the gyro only (if it even needs to) and be recording conversation.
Yeah, that's the thing. You don't need permissions for the gyro on Android and iOS, so any and all of the apps that you have on your phone or tablet could be using the gyro and you wouldn't know, except for an anomalous battery drain.
Sure, but on iOS an app is suspended when you are on a phone call unless the app has used the system APIs to enable background execution. There are only a small number of background execution modes and your app must declare which it plans to use. When it comes to location-based background execution (the most likely use of the gyro), your app still gets suspended. The system wakes it up periodically and sends location updates to a function in your app and then gives the app a small time window for that function to return an expected value. It is very much a discrete task-based multitasking system - completely different than normal desktop machines. Good sometimes. Bad sometimes.
http://petapixel.com/2014/08/0...
Good lordy.
This would be really cool if the privacy implications weren't scary. However, I can't imagine this being useful or practical wide scale. As a targeted attack, that's really scary as fuck.
Non impediti ratione cogitationus.
... has moved to smartphones.
I apologize for the lack of a signature.
Smartphones have actual microphones. Why use the gyro as a crude microphone when you have a perfectly functioning microphone built into the device already?
Oolite: Elite-like game. For Mac, Linux and Windows
Mine's got a wireless charging pad in it.
Of course, it's running WebOS, which lets me set up security such that I can require confirmation before an app's allowed to use certain features (eg, GPS), rather than just giving it a blanket 'you're allowed to use GPS whenever you want to'.
The drawback is that I don't have nearly as many apps available to use, being that it's WebOS. (I still blame those horrible Palm Pre commercials with the stoned albino -- why they didn't bother showing that it supported multitasking and copy & paste way before iOS, I have no clue)
Build it, and they will come^Hplain.
Permissions on Android are a bit more rudimentary, so it would be simple to make a background process that just sits and quietly listens to the gyro. You would need to ask for the permission to keep the device awake in order to keep the CPU and sensor chip alive and (in order for it to be practical) the permission to start on boot.
Every app seems to want access to your full memory, location info, camera, microphone and contact list. Why does a flashlight app need all this?
I carry a phone because I have to for work, and I need something to read while on the crapper, and that's it. People who use all these fancy apps are the product, not the customer.
I want to delete my account but Slashdot doesn't allow it.
Just don't use that device anywhere public. Or on a public network because they can snoop on you that way.
... maybe even eligible for a genuine patent (not that I favor patent, but ...)
Can we just succumb to the inevitable and work on building a list of the parts of a smartphone that can't be used to spy on you? I'm thinking 'maybe the battery door'. Any other suggestions?
What's the point of securing any smartphone when all of your activity on the device is captured elsewhere and sold for profit?
The point being there IS an opportunity for anyone who comes up with a workable idea to really really lock down all your gadgets (not only smartphones but all electronic gadgets) so that even when the gadgets are powered up they can't leak _any_ information
Yes, there is. And there are companies that are attempting to offer secure services and devices like this, such as Silent Circle and Blackphone.
However, your mistake with this "profitable" business idea is thinking that the majority of people actually give a shit about security and privacy and will PAY for such a service.
The current environment was birthed from the ignorance that they don't. And won't. Only a small fraction of people care enough to pay, which may or may not be profitable enough to even attempt.
On top of that, vendors are practically drooling over the onslaught of IoT devices coming, and soon it will literally be illegal for you to make a "silencer" for an electronic device. The manufacturers will lobby to ensure this happens. And they'll win.
Just don't use that device anywhere public. Or on a public network because they can snoop on you that way.
Yes, I'll just go home and surf. I'm sure I'll be perfectly safe from spying there.
After all, I trust my ISP so much that I don't even consider them a "public" network anymore. They gave me a custom home page that goes right to THEIR website, so it must be private, right? And look here, this systray icon even has their logo! I am so loved I'm practically an employee.
The app doesn't use your microphone; or you deny it, or whatever. So the app uses the gyro to figure out what you are saying anyway - you have no idea it can even do this because it doesn't use the microphone. 3rd parties could AUDIT and secure the software for government or corporate use--- and it would still record gyro information.
A background app could listen constantly even while other apps have the mic if it can background and use the gyro.
A hacked app with only gyro access...
Think about the story weeks ago about using video cameras detecting vibrations to hear things and what next gen phones could do with that-- similar situation (but crazy battery usage even on futuristic more powerful phones.)
Future work:
ID which person in the family is carrying the phone using the gyros?
Democracy Now! - uncensored, anti-establishment news
Just don't use that device anywhere public. Or on a public network because they can snoop on you that way.
Yes, I'll just go home and surf. I'm sure I'll be perfectly safe from spying there.
After all, I trust my ISP so much that I don't even consider them a "public" network anymore. They gave me a custom home page that goes right to THEIR website, so it must be private, right? And look here, this systray icon even has their logo! I am so loved I'm practically an employee.
Mine too! https://room614a.att.com/ . It's SSL, so I know I can trust it!
The point of all this isn't to record phone conversations. Some of the agencies likely to exploit this particular weakness have more than enough clout to tap the main communications channel for that.
The accelerometer exploit is a very low-quality audio sampler. Sample range tops out at about 200/second, IIRC. Enough to get a muffled audio, but nowhere near opera-quality.
However, it's something that someone could do to monitor room conversations when the phone isn't on a call. And current access controls don't provide enough protection. One of the most promising solutions is simply to limit sample rates to something relatively useless like 50/second.
Then again, if all you want is to detect basic acoustical vibrations, even that would be enough to tell people to turn on their "houseplant audio monitors".
You can also get good audio off the reflections of a tinfoil hat.
Since a long long time ago (about 50 years now) we've been able to use nearby windows and computer monitors - even picture frames - to pick up sounds inside rooms.
Why bother with a cell phone if you're trying to get a good audio pickup?
If you need to isolate a person, it's not a bad choice, but you can also use the other signals your cell gives out or responds to for locating the person precisely, without technically "using" the phone, and thereby alerting the target.
But, hey, do it the hard way, if you must.
-- Tigger warning: This post may contain tiggers! --
Guilty as charged.