Make a Listening Device Out of a Cell Phone

Welcome back, my tenderfoot hackers! So many readers in the Null Byte community have been asking me questions about evading detection and hacking undetected that I decided to start a new series on digital forensics. I applaud each of you for your concern, as the last thing I ...more

Part 1: What is Popcorn Time? Part 2: What is a torrent? Part 3: Why am I at risk? Part 4: What is a VPN? Part 5: Are all VPNs the same? Part 6: How do I stay protected? Part 1: What Is Popcorn Time? Popcorn Time is, essentially, a torrent client (look to Part 2 for further ...more

The latest film addition in the American-produced Millennium series, The Girl in the Spider's Web, was just released on Blu-ray a few days ago. As you could expect, the movie has many hacking scenes throughout, just like the previous English and Swedish language movies centere ...more

It won't come as a surprise to hear that your cell phone, tablet, and laptop are loaded with bacteria and other organic material. While most of these bacteria are harmless, there are good reasons to reduce the capability of your mobile devices to infect you—or other people. H ...more

The most common Wi-Fi jamming attacks leverage deauthentication and disassociation packets to attack networks. This allows a low-cost ESP8266-based device programmed in Arduino to detect and classify Wi-Fi denial-of-service attacks by lighting a different color LED for each ty ...more

You know that feeling when your cell phone gets stolen and you figure it is pretty much lost forever. You could've used one of the millions of device managers and trackers, but ya didn't. And the Good Samaritan is not coming to your rescue. Of course you could call the police ...more

These days, phones are more like portable entertainment systems. It's a hybrid mobile device for gaming, texting, watching movies, and listening to music more than it is an actual "phone" that you talk on. While the person who is calling you may not be all that annoying, the ...more

Staying cool in the summer heat sometimes feels like it takes all the energy in the world. But what about a fan using no-cost electrical energy? If you're looking to keep cool during a power outage, or if you don't want to break the bank by running your DIY air conditioner all ...more

Everyone loves using their cell phones for everything except actually making phone calls. Whether it's watching streaming video, listening to music or playing video games, it would seem that calling people is almost an afterthought to cell manufacturers in this day and age. U ...more

It doesn't really matter what kind of cell phone you have—battery life is one of the most important features for any electronic device. We've written tons of articles on how to get better battery life from your Android, iPhone, Kindle, and more, but we've never really covered ...more

These days, that pocket-sized computer we call a smartphone is home to your entire digital life. But with the onset of mobile payments and online banking, the line between your virtual world and the physical realm is becoming increasingly blurred. We vigilantly remember to lo ...more

UPDATE (February 26, 2014) Yesterday, the U.S. House of Representatives passed H.R. 1123 with a 295-114 vote decision. The ruling repeals the 2012 Library of Congress (LOC) decision that limited the ability to legally "unlock" your smartphone (see below). This decision reins ...more

When the power goes out, having the ability to contact others becomes extremely important, and your cell phone can be one of the most important tools to have. But if the power is out for an extended period of time, battery life becomes a constant problem. Without the ability ...more

Spotify is how I listen to almost all of my music; I use it on my way to work, while I workout, and even while I'm in the shower. And more often than not, I use my Spotify account on various devices including my MacBook, iPhone, and LG G3. In order to make listening to music a ...more

Your constitutional right to privacy cannot be violated by police, so ruled the United States Supreme Court in a unanimous decision on two cases from California and Massachusetts—a major ruling for privacy advocates worldwide. "We cannot deny that our decision today will have ...more

There's nothing like buying an awesome new gadget, but it leaves you with one problem (besides an empty wallet)—what do you do with the ones you already have? There are plenty of ways to put your old gadgets to use, but if you'd rather get rid of them, you may as well get some ...more

You can feel it in your bones. You may die if you don't get this phone. There's just one problem — the price. Suddenly, you come across what seems like manna from heaven. That very device, at a deeply discounted rate, can be yours. The only thing that makes you pause is that ...more

If you've ever spent any serious time examining the Chinese tech startup world, you know that it moves fast — very fast. The tech startups hailing from Beijing and Shenzhen are moving so fast that they're now in serious competition with Silicon Valley. The latest would-be com ...more

When it comes to blocking unwanted calls, your Android device comes stocked with a native blocking feature that allows you to reject certain phone numbers. That being said, the native blocking feature on the Samsung Galaxy Note 3 isn't the prettiest or the smartest, with its n ...more

There's nothing worse than losing your phone—except losing your phone when the ringer is silent. If you're alone, it can be excruciatingly hard to find your lost device even if the ringer is on, considering most of us don't have landlines anymore. So, the next time you find yo ...more

Christmas is just one week before Jan. 1. That means a lot of New Year's resolutions filled with promises to better ourselves with increased productivity, focus, and work ethics — but getting started can be challenging. Give the people in your life a leg up this holiday season ...more

Did you know that the YouTube app can tell you how much time you've spent watching videos? If you're like me, you'll be surprised to know exactly how much of your life is spent inside the popular app. You can get a specific breakdown of how much you YouTube you consume. The a ...more

For most carriers, "unlimited" data plans aren't really unlimited, and they still cost more than data limited plans. So while subscribing to music streaming services and storing your own music library in the cloud may be more convenient, it may eat your data up like candy. To ...more

Our hands aren't necessarily getting any bigger, but smartphones still seem to be getting larger and larger. With average cell phone display sizes nearly doubling since 2007 (leading to new terminology like "phablet"), reaching all corners of a screen can become nearly impossi ...more

Often, when you crack open a beer with friends, your buddies are more focused on texting and Snapchatting than what's happening right in front of them. Smartphones have wedged their way into bars around the world—but an innovative new beer glass is encouraging patrons to put d ...more

Early last year, Google purchased Quest Visual, acquiring the immensely popular augmented reality translator app Word Lens in the process. While Google did put the feature on the Google Glass, they spoke more about implementing Word Lens into their Translate app sometime in th ...more

UPDATE: The whitehouse petition has received enough signatures to require a response from the government. Your voices have been heard! Now we wait... The Man is always trying to hold you back, and when it comes to the government, it can be this biggest swag blocker of all. As ...more

Android's settings menu is actually pretty daunting. There are options for nearly everything, so in the sea of various menus and submenus, it's easy to overlook important privacy and security settings. On Google's Pixel phones in particular, there are 20 such settings that you ...more

In many urban areas, GPS doesn't work well. Buildings reflect GPS signals on themselves to create a confusing mess for phones to sort out. As a result, most modern devices determine their location using a blend of techniques, including nearby Wi-Fi networks. By using SkyLift t ...more

It's no secret that devices leak data, but sometimes they do so in ways you may not expect. Your phone, laptop, printer, and IOT devices leak Wi-Fi information that can (and is) used to track you. Today, we'll make a Wi-Fi probe logger with Probemon.py to track nearby devices ...more

Forget headphone jacks and "Courage." Look past the shiny Jet Black finish and beyond the minimized antenna lines. Sure, quad-LED flash and dual cameras are nice—but dual-SIM would've been much better. Dual-SIM support in the iPhone 7 had been rumored for months leading up to ...more

The season for outdoor activities and indoor heavy cleaning has arrived, and with that comes all the aches and pains of enjoying it. If you find yourself with sore muscles and no easy way to fix it, then a portable massager you can use whenever you're in pain is something that ...more

Android 11 is here. Prior to Google dropping the naming scheme, this would have been a dessert with an R name (maybe Rice Krispies Treat or Red Velvet Cake) — but nope, just plain ol' Android 11. And after months of betas and a global pandemic, it finally debuted a little over ...more

Gotta catch 'em all, right? That's easier said than done, considering that Pokémon GO has region-specific characters that you may never get a chance to see. Sure, you can spoof your GPS location to make the augmented reality game think you're at a different spot on the map, bu ...more

Wi-Fi devices are continually emitting "probe frames," calling out for nearby Wi-Fi networks to connect to. Beyond being a privacy risk, probe frames can also be used to track or take over the data connection of nearby devices. We'll explain how to see nearby devices emitting ...more

Thanks to digital media, music lovers can listen to the newest tune from their favorite band whenever they want, however they want. Audio files can be played in many different formats on many different devices, from iTunes on your computer to Pandora on your cell phone. The mu ...more

Apple AirTags are super helpful for keeping track of your keys, backpack, and other frequently misplaced items, but there are some pretty clever things you can do with them beyond finding regularly used stuff. Apple sells its smart trackers — small, circular white discs 1.26 ...more

The battery in the Samsung Galaxy S4 may pack 500 more milliamps per hour than the old S3 battery, but that doesn't necessarily mean more battery life. High-powered devices need lots of juice, and the S4 is definitely more powerful than its predecessor. The new battery can han ...more

The Snapdragon 820 and 821 were met with praise last year, receiving almost no complaints compared to their overheating predecessor, the Snapdragon 810. But now, all eyes are on Qualcomm to see what goodies they have in store for us this year, as their new SoC, the Snapdragon ...more

Free stuff is pretty cool. Free internet is even cooler—and free internet that is actually free is the coolest. If you would rather avoid sitting in a Starbucks and having to listen to hipsters discuss the proper length of cropped jeans, then this should be of interest. Freed ...more

Google's next-gen cellular carrier, Google Fi, which replaces Project Fi, is making waves across the mobile industry. With super-cheap plans starting at only $20 and the ability to connect to millions of Wi-Fi hotspots across the globe, it's tempting many users to make the swi ...more

Have you ever noticed that whenever you setup your voicemail account after getting a new cell phone number, it asks you to create a security pin to access your voicemail from other phone lines? When you call your home or cell number from another phone, after a few rings your ...more

While many people may use Bluetooth every day, the majority don't know how it works or that it can be hacked. Bluetooth hacking gives a clear window into the world of the target. Nearly every device has Bluetooth capabilities, and people store a great deal of personal info on ...more

Samsung unveiled their new flagship device, the Galaxy S4, at a live event in New York City today. Here's a quick rundown of the specs and all of the new features that you can expect when you finally get your hands on one (whenever that will be). The GS4's Specs 5" 1920x1080 ...more

Now that Google has announced its new Pixel smartphones, folks who rushed to buy an iPhone 7 might be experiencing a bit of buyer's remorse. The new Pixel and Pixel XL are packed to the brim with cutting-edge features and top-notch hardware, and Google seems to be taking direc ...more

The headphone jack is becoming outdated technology in smartphones — that's what many manufacturers would have you believe. For the convenience of the audiophiles out there, we recently published our list of all phones that have removed the 3.5 mm jack. But what did each compan ...more

The Raspberry Pi is a credit card-sized computer that can crack Wi-Fi, clone key cards, break into laptops, and even clone an existing Wi-Fi network to trick users into connecting to the Pi instead. It can jam Wi-Fi for blocks, track cell phones, listen in on police scanners, ...more

Apple has released the 2nd beta of iOS 8, exactly fifteen days after the first version was unveiled at WWDC and subsequently released to developers. I've already shown you some of the new features of iOS 8, like location-based app alerts, randomized MAC addresses, hidden Safar ...more

No matter your reasons, you might need a second phone number that's a little more disposable than your primary number — a "burner" number, so to speak. If you create this burner number using Google Voice, you'll get new functionality like call forwarding and voicemail transcri ...more

When Apple recently unveiled iOS 8, many of the newly-added features in their mobile OS seemed eerily familiar to Android users. This is probably because the vast majority of these new features have been available in Android for quite some time. If imitation truly is the sinc ...more

In the case of Apple Watch v. Fitbit, the winner comes down to the judge at hand. Apple currently offers two smartwatches — the Series 5 and the Series 3 — while Fitbit offers three models — the Fitbit Versa 2, Fitbit Ionic, and Fitbit Versa Lite. Whatever your assumptions abo ...more

Smartphones are vital travel companions. While you're on the go, they connect you with loved ones back home, help you find tickets and passes for tourist attractions, and make it easy to find your way through foreign roads — but even the most powerful smartphone could use help ...more

|Choose Your View: Quick Bullet Points | Detailed Descriptions Android's newest major update is a special one — it's the tenth full version of the world's most commonly used operating system. The latest release, dubbed simply Android 10 (codename Android Q), was first showcas ...more

After finding and monitoring nearby wireless access points and devices connected to them, hackers can use this information to bypass some types of security, like the kind used for Wi-Fi hotspots in coffee shops, hotels, and in flights high above the ground. By swapping their M ...more

There's never been a better time for streaming videos on your phone. With so many options available (including a potential mobile-only Netflix tier) and so many new smartphones having large screens, there's a good chance you know someone who mainly use their phone for videos. ...more

The next big iOS version for iPad, iPhone, and iPod touch was revealed by Apple at WWDC 2018 and dropped for everyone on Sept. 17, 2018, less than a week after Apple revealed the new iPhone lineup. We've rounded up all the big picture items and secret features and changes we c ...more