Give Someone Diarrhea

Smartphones and other Wi-Fi enabled devices send radio signals called probe frames to locate nearby wireless networks, which makes them easy to track by listening for their unique MAC address. To show how this kind of tracking works, we can program a NodeMCU in Arduino to snif ...more

Due to weaknesses in the way Wi-Fi works, it's extremely easy to disrupt most Wi-Fi networks using tools that forge deauthentication packets. The ease with which these common tools can jam networks is only matched by how simple they are to detect for anyone listening for them. ...more

Hackers can be notoriously difficult to buy gifts for, so we've curated a list of the top 20 most popular items Null Byte readers are buying during their ethical-hacking studies. Whether you're buying a gift for a friend or have been dying to share this list with someone shopp ...more

There are a lot of Android phones out there, and chances are that someone in your life is looking for one this holiday season. Well, there also happens to be a lot of Black Friday deals on Android phones this year. So we've rounded up the best deals taking place on Black Frida ...more

Armis Labs has revealed eight vulnerabilities, called "BlueBorne", which put 5.3 billion Android, iOS, Windows, and Linux devices that use Bluetooth at risk. With it, hackers can control devices, access data, and spread malware to other vulnerable devices through networks. In ...more

In our first part on software-defined radio and signals intelligence, we learned how to set up a radio listening station to find and decode hidden radio signals — just like the hackers who triggered the emergency siren system in Dallas, Texas, probably did. Now that we can hea ...more

On April 7, 2017, residents in Dallas, Texas, woke to the sound of emergency sirens blaring all over the city. No one could shut them off, and after repeated efforts to contain the situation, the city had to shut down the entire system. While the media reported a sophisticated ...more

Hi, everyone! Recently, I've been working on a pretty interesting and foolish project I had in mind, and here I'm bringing to all of you my findings. This guide's main aim is to document the process of building an Android kernel, specifically a CyanogenMod kernel and ROM, and ...more

No more carrying around heavy laptops and thousands of Linux Live CDs and USBs to always be ready for pentesting on the fly! I hope you had a good Christmas and happy new year! Update1: Added the section "weaponizing your Android" where I talk about apps and fundamental Kali ...more

Did you know Kali 1.0.8? You probably did, and you probably know about the EFI boot option that has been added. That's a very interesting new feature because it allows Kali to be easily booted on Mac too, and every EFI-supported device. First three preview lines gone? As alw ...more

Apple's newest mobile operating system, iOS 8, is out for the general public, and we've got a rundown on the best new features you can use on your iPad, iPhone, and iPod touch. While there's not a huge visual change as there was from iOS 6 to iOS 7, there's still plenty of coo ...more

The camera situation on the all new HTC One is a little daunting. The M8 has not one, not two, but three camera lenses built in. First, there's the 5 megapixel selfie machine up front, then around back, there's the new Duo Camera with a refined UltraPixel sensor. HTC has done ...more

This time it's serious. Really. The largest web security vulnerability of all time went public on Monday, April 7th, 2014, resulting in widespread panic throughout the Internet as system administrators scrambled to secure their websites from the OpenSSL bug known as Heartblee ...more

In the latest software updates for iPhone and iPad, there's an even easier way to view all your saved Wi-Fi networks and credentials and share them with family, friends, and others who need access. For a while now, whenever your Wi-Fi-connected iPhone or iPad gets close to an ...more

As the iOS 18 beta continues, Apple's still investing time into fixing up iOS 17. Compared to iOS 17.4 and iOS 17.5, which both had over 30 new features and changes, iOS 17.6 is a relatively small software update for iPhone. But there are still some important things to know ab ...more

Some websites require you to perform a verification task so they know you're human and not a bot. It helps websites curb spam, abuse, unauthorized access, and cyberattacks but also adds an obstacle for anyone trying to visit their content. If you find it more of a nuisance tha ...more

A new feature in Apple's latest big iPhone software update lets you personalize how you appear on other people's incoming call screens and even customize individual contacts on your own incoming call screen if they don't have a preferred style to show you. It's called Contact ...more

There are some important new features in the Photos app on iOS 17 and iPadOS 17 that will streamline editing, give your pets more recognition, help you learn about the world you've captured, and even add a bit of fun to your day. There are even a few hidden tricks that may sur ...more

The Camera app on your iPhone includes new features with the iOS 17 update that will help you take better photos and more impressive videos, but there are a lot of cool new things available that you might not see right away. Many of Camera's new features are exclusive to the ...more

Apple is finally adding profiles to Safari, so you can now keep your personal, work, and other topical browsing totally separate in their own instances, with their own history, cookies, website data, and active extensions. Creating profiles for different parts of your life ha ...more

There is no default option on iOS 16 or iOS 17 to lock your apps behind Face ID, Touch ID, or passcode authentication. However, a clever, easy-to-implement workaround will protect your sensitive apps from nosy friends and family temporarily using or looking at something on you ...more

You might have missed it, but the virtual keypad you use to enter phone numbers in your smartphone's dialer and contacts app isn't all numbers. Take a closer look, and you'll notice a few mysterious buttons you've likely been tuning out unconsciously. But it's time to stop ign ...more

Thanks to rapid advancements in the field, generative AI can do some amazing things already, from generating text, images, and video with just a prompt to automating tasks and developing new products and services. Now, artificial intelligence can even help you craft emails dir ...more

Whenever you're on a FaceTime call, you can use SharePlay on your iPhone or iPad to screen share, watch TV or movies together, work out with each other, and even listen to the same music at the same time. SharePlay also recently received a new skill that turns FaceTime into a ...more

An invaluable button on your iPhone can do hundreds, even thousands, of amazing things, but most iPhone users don't even know it exists. You can't push it. You can't click it. You can't press it. But it's the largest button on your iPhone, more powerful than the versatile Side ...more

Your iPhone's Mail app has a lot of fantastic productivity features, such as unsending emails, follow-up reminders, opening drafts from almost any view, the snooze option, bulk-selecting messages, and the formatting toolbar, but one of the most helpful ones might just be the o ...more

It's that time of year again. No, not the holiday season … the "share your year in music listening" season. And no matter which music streaming service you use, there's a way to find and share (or not share) your activity from 2022. Since Spotify unveiled its Wrapped campaign ...more

If you use the Notes app on your iPhone and haven't updated to the newest software yet, you're missing out on some pretty valuable upgrades that improve smart folders, note security, collaboration, and more. So what are you waiting for? The new tools in Apple's Notes update m ...more

It's no secret that Apple's iOS 16 update is packed with useful features, but some of them Apple never even mentioned. Not at the software's unveiling in June and not even after iOS 16's public release in September. It's actually surprising considering that one little-known ne ...more

If you're looking to get a new iPhone 14 Pro or 14 Pro Max, which model should you choose? What makes the iPhone 14 Pro different than the 14 Pro Max? Find out. In the same vein as the iPhone 13 Pro and 13 Pro Max models, the 14 Pro and 14 Pro Max are identical except for a f ...more

Apple just upgraded its Reminders app for iPhone, and there are some powerful new tools and improvements for task management that'll make you wonder how you ever lived without them. You'll notice some of the new Reminders features, which come with iOS 16, right off the bat wh ...more

You may use Safari on your iPhone or iPad to open links and browse the web, but there's so much more it can do for you. On updated software, you can implement third-party Safari extensions in your browser that go above and beyond content blocking, sharing, and performing basic ...more

If your current cellular provider costs too much, has poor reception in your area, or doesn't support features you'd like to use, switching to another carrier is the obvious move. But can you bring your current iPhone or Android phone? In most cases, your current smartphone w ...more

You see it in the movies all the time. A character on the phone doesn't like what the other person is saying or telling them to do, or they just don't want to talk to them anymore, so they fake bad reception and cut the call off. In real life, it's pretty easy to tell when som ...more

There is no iPad version of Apple's Calculator app (at least, not yet), so you won't find it on your Home Screen, in your App Library, or as a shortcut in the Control Center. But that doesn't mean your iPad doesn't have an official calculator. Before the first iPad in 2010, A ...more

Unless you have unlimited cellular data, you probably connect your iPhone to every Wi-Fi network you come across. It could be a local coffee shop, public library, or just a friend's place. Wherever it is, you'll need to ask for the access point's password if it's a secured net ...more

With the holidays right around the corner, it's easy to miss a big software update on your iPhone, and by that, I mean iOS 15.2, which was pushed out Monday, Dec. 13. There's a surprising amount of new features and changes in the updated firmware, and there are a few big ones ...more

In iOS 15, Apple unveiled a new feature called Focus, an extension of Do Not Disturb that lets you focus on the one thing that's important at any particular moment. It does so by minimizing distractions from your iPhone and other Apple devices, but there's a lot you should kno ...more

If you've recently built a Wi-Fi spy camera out of an ESP32-CAM, you can use it for a variety of things. A baby monitor at night, a security camera for catching package thieves, a hidden video streamer to catch someone going somewhere they shouldn't be — you could use it for p ...more

When Tim Cook, Craig Federighi, and other core Apple leaders take the stage for WWDC 2021 on June 7, we'll hear a lot about exciting new things to come. We're likely to see what's in store for watchOS 8 and macOS 12, but more importantly, we'll get a glimpse at what iOS 15 and ...more

Your iPhone keeps track of every single place you go, especially those you frequent most often, and syncs those locations across all your iCloud-connected devices. People who gain access or already have access to your iPhone, iPad, iPod touch, or Mac may be able to view all of ...more

You should feel relatively safe to watch and post videos on TikTok, but like with any online service, you're always at the mercy of hackers. It's unfortunate, but anyone can become a target for arbitrary reasons. Maybe your TikTok videos are controversial. Maybe someone has a ...more

While obvious, it's a lot more difficult to hack into a locked computer than an unlocked computer. As a white-hat hacker, pentester, cybersecurity specialist, or someone working in digital forensics, there's an easy solution — make it so that the computer won't fall asleep and ...more

Strange or uncomfortable encounters can be difficult to get away from sometimes if you're overly polite and don't want to hurt anybody's feelings. Thankfully, your iPhone can help save the day, providing you with a plausible excuse to exit the scene without having to conjure u ...more

Okay, so you rooted your Android phone .... now what? There are a few ducks you need to get into a row, like backing up your stock boot image, getting SafetyNet sorted, and improving security with biometrics. But there are also awesome root mods waiting for you — just don't ge ...more

Apple's latest big update to iOS 14 has a lot to be excited about. While iOS 14.2 had some fun new features, such as new emoji and wallpapers, People Detection in Magnifier, and a Shazam control, iOS 14.3 brings on the heat. There are new Apple services and products that are s ...more

One thing you can expect from Apple is that big features work right out of the box. The company designs its products to be easy to use for any experience level, so you might expect the same to be true for 5G, one of the biggest selling points for the iPhone 12, 12 mini, 12 Pro ...more

The iPhone 12, 12 mini, 12 Pro, and 12 Pro Max all have positive coverage surrounding their refreshed design, camera upgrades, and 5G connectivity. One piece of negative press you might've seen, however, is about the charger. Specifically, that there's a Lightning to USB-C cab ...more

According to the CDC, one in four U.S. adults has a disability, where limitations can involve vision, cognitive function, hearing, motor skills, and more. That's why the iPhone has accessibility features; so that everyone can use an iPhone, not just those without any impairmen ...more

These days, most images we post online or share with others come from our smartphones. Whenever personal data is in them, such as debit card numbers, addresses, phone numbers, passwords, and other sensitive information, it's easy to jump into your iPhone's markup tools to blac ...more

If you live in the US, it's pretty simple: The Google Pixel 4a is the best phone for rooting and modding in 2020. Its price keeps the risk-reward ratio nice and low, and its unlockable bootloader makes it easy to modify virtually any aspect of Android. But recent updates to A ...more

According to Apple, Siri serves 25 billion requests per month — an enormous number for a feature that was only released nine years ago. But when you think about how much work Apple has put into Siri over the years, it makes sense that the virtual assistant is being used more a ...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

The future of TikTok in the U.S. is all but certain. Microsoft, Walmart, or Oracle could save the day by buying the company, TikTok may win its lawsuit, or China's new restrictions could halt everything — but all could fail. Just like Vine before it, TikTok could be on its way ...more

Wearing masks and social distancing doesn't sound like a fun movie night with friends, but you can still be comfortable and watch films together remotely. Services like Discord and Netflix Party make it possible to watch movies simultaneously from different parts of the U.S., ...more

Android phones finally have a true AirDrop alternative called "Nearby Share." The new feature was added through an update to the Google Play Services app that comes pre-installed on all Android devices in the US, so you don't even have to wait on a firmware upgrade — it's just ...more

The Home button on an iPhone does a lot. That's not necessarily news for anyone who's ever owned an iPhone with a Home button, but what you might not know is that it's capable of so much beyond the standard everyday functions. So if you have an iPhone 7, 8, or the new SE model ...more

It feels like just yesterday Apple unveiled iOS 13 to the world, introducing game-changing features like system-wide dark mode and enhanced editing tools in Photos. But WWDC 2020 is rapidly approaching, which means iOS 14 is as well. As it turns out, we don't need to wait for ...more

There's a serious issue with Google Fi's service for iPhone that prevents sending any MMS pictures via the Messages app. The problem doesn't affect all iPhone users on Google Fi, but if you're like me and keep getting that frustrating "Not Delivered" alert, there's a fix. I j ...more

Advancements in technology have made it perfectly possible to make a short film or even an entire movie with your iPhone or Android — as long as you've got the right gear. Lenses, stabilizers, tripods, lighting, microphones, chargers, and cases can make the difference between ...more