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Throughout 2016, it has become increasingly apparent that our smartphones have been misbehaving. Malware is bad enough How to Avoid Downloading Trojans to Your Android Device How to Avoid Downloading Trojans to Your Android Device Trojan attacks are sneaky because they can steal your personal details and sensitive data without you even realizing it. Here's how to avoid Trojan infections on Android devices. Read More , issues with the device chipset Are You One Of 900 Million Android Users Exposed By QuadRoot? Are You One Of 900 Million Android Users Exposed By QuadRoot? Has your Android device been potentially compromised by American hardware manufacturing giant Qualcomm? New Android bug QuadRoot affects devices running Qualcomm chipsets -- and that's most Android hardware! Read More can be patched, and you should have set a PIN for your device Which Is More Secure, A Password Or a Pattern Lock? Which Is More Secure, A Password Or a Pattern Lock? Our smartphones carry a lot of personal information. All of your text messages, emails, notes, apps, app data, music, pictures, and so much more are all on there. While it's a very great convenience to... Read More just in case.

But those things — concerning as they are — have been a mere sideshow to the real privacy scandal taking place right now. That device in your pocket, or on your desk, or even in your hand as you read this… your phone has been spying on you.

Why? How? And what has Google got to do with it? Let’s find out more.

Targeted Ads Based on Your Conversations

Early in 2016, it became apparent that either a massive coincidence was taking place across the planet or smartphones were listening into conversations for keywords and serving contextual adverts Is Your Smartphone Listening to You, or Is It Just Coincidence? Is Your Smartphone Listening to You, or Is It Just Coincidence? Little green android guy with an ear horn? or a glass against the wall? or looking over your shoulder as you watch TV? Read More .

At this point, it was only possible to get similar results from Google and Facebook, but as we looked further into this, we found that several other services were also listening in 9 Examples of How Smartphones Are Eavesdropping on You 9 Examples of How Smartphones Are Eavesdropping on You If you aren't careful, your smartphone may be listening in on your conversation -- even when you aren't on a call. But is it real or is it just paranoia? Read More . Thanks to our readers, it was possible to gauge an idea of just how widespread the issue was, and to rule out the possibility of a mere coincidence.

The App That Proves It Is Possible

When this possibility was first posited, it seemed unlikely — that is, until cybersecurity researcher Ken Munro and Pen Test Partners’ David Lodge got together to develop an app. With the aim of recording nearby conversations and displaying them on a PC, the app was a working proof of concept.

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As Munro explained to the BBC:

All we did was use the existing functionality of Google Android — we chose it because it was a little easier for us to develop in.

All it took was the Android device microphone and some system permissions.

So, we know it’s possible, and that people have noticed some very strange behavior from adverts on their smartphones. But is there any proof that audio is being recorded? Well, yes there is. Quite a bit of it, in fact.

“OK Google” Records What You Say

Ostensibly to improve voice recognition, the OK Google service records every instruction and search query you make using the “OK Google” command.

OK Google Now Screenshot

Rather than just react to the captured audio, the data is stored. If you’ve used OK Google, you probably thought that the audio was observed by the app, which then reacted to it. You probably didn’t even realize it wasn’t being discarded, because you had zero awareness that it was being recorded.

These recorded clips seem to be a combination of OK Google commands and completely random soundbites, the audio for which is all stored on a central Google server.

Check Google’s History of Audio Recordings

Once you’ve digested that chilling fact, it’s time to check the recordings. The best way to do this is to visit history.google.com/history/audio on your phone or in your desktop browser, and take a look at the long list of items that have been recorded.

My list is particularly baffling, as it combines OK Google commands with random snippets. Google attempts to transcribe everything, with occasionally hilarious results.

OK Google History of Audio Voice Commands

(For instance, on February 5th I apparently said “Harry”, but on playing the clip, I actually said “Ceri” — my wife’s name, pronounced “Kerry”. Elsewhere, it was displayed as “Cherry”!)

Depending upon how long you have been using OK Google on your phone or tablet, this list of clips could stretch back several years. My history of audio clips runs back to July 2014, at which time I was using a HTC One M7 smartphone, and enabling Google Now for the first time.

“OK Google, Stop Recording Me”

Disabling these recordings seems to be the best option. While they might be largely nonsense, the fact that they can be recorded apparently without your knowledge, at any time, is of huge concern. Tying this back to the unease over Google and Facebook potentially eavesdropping for keywords, switching off the feature makes sense.

Disable Voice Activity on OK Google Now

To do this, go to history.google.com/history/audio and open the right-side menu, selecting Activity controls. From here, scroll down until you find Voice & Audio Activity and tap the switch to Pause.

You’ll then be presented with a confirmation screen, informing you that the action will limit or disable OK Google and other features. Note also that:

Google may also continue to collect and store audio data in an anonymized way.

Delete Previous Recordings

At this stage, if you want to discard the existing recordings, you should do so — whether they’re nonsense or not!

Delete Past Voice Recordings on OK Google Now

Tap the Manage Activity link, then open the right-hand menu and choose Select. From here, tap each check box then the trashcan button at the top-right. Again, Google will inquire as to whether this is genuinely a decision you want to make, and present you with some reasons to keep the recordings. Simply proceed through this notice and confirm the deletion to rid yourself of the recordings.

One last thing to note here: make sure you disable recording and delete activity for ALL of your Google accounts.

It’s Invasive and It’s Not OK, Google

When you started using OK Google, you probably didn’t expect your voice to be recorded — certainly not in a way that could be retrieved later. There really seems little reason for Google to retain this data.

Voice recognition technology is impressive. It’s useful, and it can add an element of safety in hands-free scenarios. But does it really have to be invasive? Do these recordings have any connection to accusations that advertisers are eavesdropping via our smartphones?

What do you think? Did you find any unusual or concerning recordings in your own history? Tell us in the comments.

Image Credit: CYCLONEPROJECT/Shutterstock

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