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Apps Aren't Listening to You, But They Are Recording Your Screen

Apps on your phone may not be stealthy snooping on your conversations, but they are doing something equally, if not more, creepy: recording your screen, a study from researchers from Northeastern University has revealed.

 & Angela Moscaritolo Managing Editor, Consumer Electronics

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Convinced that apps on your phone are secretly eavesdropping on your conversations and to target you with advertisements?

As Gizmodo reported, researchers from Northeastern University conducted a yearlong study to find out if this conspiracy theory is true. The researchers – Elleen Pan, Jingjing Ren, Martina Lindorfer, Christo Wilson, and David Choffnes – studied the behavior of more than 17,000 popular Android apps to determine whether they stealthy access your phone's microphone to record audio.

There's good news and bad news. On the bright side, the researchers "found no evidence" that apps are sneakily snooping in on your conversations. Now, the bad news: They're doing something equally, if not more, creepy: recording your screen.

"We find that several apps leak content recorded from the camera and the screen over the internet, and in ways that are either undisclosed or unexpected given the purpose of the app," the researchers concluded. "Importantly, we find that third-party libraries record a video of a user's interaction with an app, including at times sensitive input fields, without any permissions or notification to the user. Further, several apps share users' photos and other media over the internet without explicitly indicating this to the user."

The researchers said they responsibly disclosed the confirmed privacy leaks to developers and Google's Android privacy team, and "they took action to remediate the privacy concerns."

Meanwhile, during his appearance on Capitol Hill this April, Facebook CEO Mark Zuckerberg denied rumors that the social media app is listening to you through your phone microphone to serve up targeted ads based on your conversations, calling it just a "conspiracy theory."

About Our Expert

Angela Moscaritolo

Angela Moscaritolo

Managing Editor, Consumer Electronics

My Experience

I'm PCMag's managing editor for consumer electronics, overseeing an experienced team of analysts covering smart home, home entertainment, wearables, fitness and health tech, and various other product categories. I have been with PCMag for more than 10 years, and in that time have written more than 6,000 articles and reviews for the site. I previously served as an analyst focused on smart home and wearable devices, and before that I was a reporter covering consumer tech news. I'm also a yoga instructor, and have been actively teaching group and private classes for nearly a decade. 

Prior to joining PCMag, I was a reporter for SC Magazine, focusing on hackers and computer security. I earned a BS in journalism from West Virginia University, and started my career writing for newspapers in New Jersey, Pennsylvania, and West Virginia.

The Technology I Use

My little Florida beach bungalow is brimming with smart home tech. I have a smart speaker or display in every room, allowing me to control other connected devices by voice. The Nest Hub on my bedside table lets me set wake-up alarms, control my smart light bulbs, and set the temperature on my smart thermostat. I use the Amazon Echo Show 8 on my kitchen counter to browse recipes, reorder protein powder, check the weather, and watch the news while I do dishes. 

Because I suffer from allergies, air purifiers are essential. My favorite model is the Dyson Purifier Cool TP07, which doubles as a fan and continuously sends indoor pollution data to its companion mobile app. 

My pitbull Bradley sheds, so a good robot vacuum is a must. I currently use a premium Ecovacs Deebot that can both vacuum and mop, empty its own dustbin, and wash its own mop cloth. 

For fitness, I like to mix up my routine with cycling, indoor rowing, running, and strength training in addition to yoga. I take classes on the Tonal 2 smart strength training machine, I row indoors on an Aviron machine, and track my beach runs with an Apple Watch while listening to music on my Apple AirPods Pro. On the weekends, I love riding e-bikes like the rugged, beach-friendly Aventon Aventure for fun and fitness.

My job involves a lot of virtual meetings, so a quality webcam, microphone, and ring light are important. I use the Jabra PanaCast 20 webcam, the Elgato Wave: 3 microphone, and a Yesker tripod ring light. 

As for my preferred phone platform, I'm an iPhone person, but I've also extensively used Android for product testing.

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