Questions During Interviews

During our last adventure into the realm of format string exploitation, we learned how we can manipulate format specifiers to rewrite a program's memory with an arbitrary value. While that's all well and good, arbitrary values are boring. We want to gain full control over the ...more

The internet is constantly under siege by bots searching for vulnerabilities to attack and exploit. While conventional wisdom is to prevent these attacks, there are ways to deliberately lure hackers into a trap in order to spy on them, study their behavior, and capture samples ...more

Millions of travelers pass through airports each day without understanding how powerful and insecure a boarding pass can be. Anyone can scan the boarding pass barcode with a mobile app, allowing access to frequent-flyer accounts and even a passenger's temporary airline account ...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

An attacker with shell access to a Linux server can manipulate, or perhaps even ruin, anything they have access to. While many more subtle attacks could provide significant value to a hacker, most attacks also leave traces. These traces, of course, can also be manipulated and ...more

The iPhone X was released in November 2017, and the iPhone 8 and 8 Plus dropped right before it, but the hottest news right now revolves around the 2018 iPhone releases. The rumor mill regarding the iPhone X's successor started churning out speculations on names, cameras, disp ...more

The Watch Dogs video game series came out in 2014, enamoring audiences with the idea of a seemingly magical smartphone that could change traffic signals, hack web cameras, and even remotely control forklifts. This may sound like science fiction, but The Sonic uses a customized ...more

Surveillance is always a useful tool in a hacker's arsenal, whether deployed offensively or defensively. Watching targets yourself isn't always practical, and traditional surveillance camera systems can be costly, lacking in capabilities, or both. Today, we will use motionEyeO ...more

When hacking into a network during a penetration test, it can sometimes be useful to create your own wireless AP simply by plugging a Pi into an available Ethernet port. With this setup, you have your own backdoor wireless connection to the network in a matter of seconds. Crea ...more

PowerShell Empire is a post-exploitation framework for computers and servers running Microsoft Windows, Windows Server operating systems, or both. In these tutorials, we will be exploring everything from how to install Powershell Empire to how to snoop around a target's comput ...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

In five short years, three generations of ultra-low-cost Raspberry Pi devices have challenged the boundaries of what a person can do with a $35 computer — especially with Kali Linux. With each Pi more powerful and cheaper than the last, the addition of the Pi Zero in 2015 too ...more

When WhatsApp first came out in 2010, it quickly gained notoriety as a great way to meet new people all over the world thanks to group chats, which allow multiple admins for each group that can all add participants from their own contacts lists. As a repair tech, I would buy ...more

Step 1: What Exploit Development Is and Why Should I Be Interested on About This Topic An exploit is a piece of software, a chunk of data, or a sequence of commands that takes advantage of a bug or vulnerability in order to cause unintended or unanticipated behavior to occur ...more

NOTICE: Ciuffy will be answering questions related to my articles on my behalf as I am very busy. Hope You Have Fun !!! Hello Guys, Welcome to my first tutorial and in this tutorial we are basically going to create a port scanner in python ( I guess without external librarie ...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

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

Hello there, people. Today, I am going to show you how to extract the essence from a useful plant, using either alcohol or olive oil. This is how you take a plant and turn it into a useful (and preservable) medicine. For those of you who know nothing about herbal medicine, let ...more

If you've been to a convention of any sort before, you know that there are good and bad panels, and that their inherent goodness or badness often has little to do with the actual content being discussed. That's because giving a panel is a skill that not everyone has. However, ...more

With iOS 17, Apple News integrates more deeply with Apple Podcasts and Apple Stocks and has become a bit more fun thanks to new crossword puzzles. But that's not all that appears in the updated News app. Many of the new Apple News features, some of which were released in Sept ...more

Gaming just got easier, thanks to Apple. A secret feature on your iPhone or iPad makes it so much easier to beat that level or opponent you can't seem to defeat, and it can even help you learn to play a new game faster. Apple's secret weapon against challenging levels and see ...more

Apple's dictation tool for iPhone is a useful hands-free way to enter text without typing anything manually. While its transcriptions aren't always precise, it's better than having to type out long messages, emails, and notes by hand — and it just got a significant improvement ...more

Over the past few weeks, Google, Snap, and Facebook have all taken their turns to show off their new augmented reality technologies. This week, it was Apple's turn, with new AR features for iOS 15 along with new capabilities for developers. Meanwhile, Facebook's plans to laun ...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

Facebook's annual earnings call on Wednesday didn't come with any big surprises, that is, if you took everything at face value. However, if you read between the lines, and paid close attention to the very specific and intentional language the company's CEO, Mark Zuckerberg, u ...more

When life hands you lemons, make lemonade. At Magic Leap, the lemons are the COVID-19 pandemic, and the lemonade is a new solution for virtual meetings born out of social distancing. As reports of Apple's long-awaited AR wearable begin to kick up again (and designers continue ...more

We often discuss the augmented reality efforts coming from the biggest players in Silicon Valley like Google, Facebook, Apple, and others, but one name that keeps coming up when you really begin to dig into the AR space is Vuzix. Since the late '90s, the company has quietly bu ...more

If you just got an iPhone 12, 12 Pro, 12 Pro Max, or 12 mini, and you've never owned an iPhone before, some of the most basic tasks can be baffling. Shutting it down, force-restarting it, quitting apps, and even viewing the percentage of battery remaining sound simple but aren ...more

Apple does not provide a native way to lock apps on your iPhone behind Face ID, Touch ID, or your passcode. For a long time, we've wanted that option for improved privacy and security, but Apple does allow developers to use its authentication protocols. Apps like Messenger, Ou ...more

You have an assignment due, whether it's homework for school or a project for work, but you've only got a few hours left. There's no way you're going to finish in time and do a good job, and you don't want to turn in anything incomplete or half-assed. While it may seem you're ...more

Apple's iOS 13 has been available for beta testing since June, and the stable release pushed out to everyone on Thursday, Sept. 19. To help you make the most out of iOS 13 for iPhone, we've rounded up everything you'll want to know, whether a colossal feature, small settings c ...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

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

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

Over the years, we've seen security breach after security breach, as well as high-profile data scandals where collected personal information was misused by companies. Apple makes customer privacy a priority, so there have been few issues to worry about when it comes to its ser ...more

Apple has tools built into iOS to help parents monitor the iPhone habits of their children. However, those same tools can be used by everyday iPhone owners to both hide apps they don't care about, as well as restrict features they don't need or that infringe on privacy. Whethe ...more

Privacy and security go hand in hand, especially for smartphones. When it comes to privacy, you decide what personal information about yourself is out there to discover. Security, on the other hand, is all about enforcing those privacy decisions. Sometimes privacy and securit ...more

Besside-ng is the hidden gem of the Aircrack-ng suite of Wi-Fi hacking tools. When run with a wireless network adapter capable of packet injection, Besside-ng can harvest WPA handshakes from any network with an active user — and crack WEP passwords outright. Unlike many tools, ...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

While iOS offers a plentiful mix of excellent and exclusive features, what you see is what you get. Apple doesn't leave much room for customizability, meaning most people's iPhones look relatively the same. You can make yours stand out, however, by giving your apps unique and ...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

The last iOS software update was a modest one, but iOS 17.4 has a lot more for your iPhone, including changes to emoji, Podcasts, security, Safari, widgets, Apple Cash, CarPlay, and more. Many of the exciting changes in iOS 17.4, as well as iPadOS 17.4, apply to users in the ...more

With iOS 17 on your iPhone, you have access to new health- and fitness-related features that can help you improve your mental well-being, reach your fitness goals, take your medication on time, avoid eye strain, and more. The biggest new features are found within the Health a ...more

Perhaps the biggest new feature within Apple's iOS 17.2 update for iPhone is Journal, a new journaling app designed to help you take a moment to reflect each day using reflection prompts, recommendations via on-device intelligence, and suggestions for recent activities and eve ...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

There's an iOS feature that benefits many users, but it's absolutely vital if you wear AirPods or other headphones models connected to your iPhone. A large number of iPhone users don't even know about it, especially since it's disabled by default and hidden deep in the system ...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

Samsung's lineup of Galaxy Note devices for 2020 include the specs-behemoth Galaxy Note 20 Ultra and the slightly more cost-effective Galaxy Note 20. Excuse the pun, but there's a lot to unpack here in terms of unique features and hardware. These are the first smartphones wit ...more

Your social security number, credit card information, and medical history can fall into the wrong hands if you're not careful about how and where you share your data online. If you really care about your data, there are tools and techniques you can utilize to protect yourself ...more

Although the Clock app in iOS has undergone some design changes over the years, you still can't set more than one timer on your iPhone. Oddly enough, Apple's own HomePod speaker added this feature, mimicking the timer on Amazon's popular Echo smart speakers. Fortunately, throu ...more

Ports allow network and internet-connected devices to interact using specified channels. While servers with dedicated IP addresses can connect directly to the internet and make ports publicly available, a system behind a router on a local network may not be open to the rest of ...more

A PirateBox creates a network that allows users to communicate wirelessly, connecting smartphones and laptops even when surrounding infrastructure has been disabled on purpose or destroyed in a disaster. Using a Raspberry Pi, we will make a wireless offline server that hosts f ...more

Airgeddon is a multi-Bash network auditor capable of Wi-Fi jamming. This capability lets you target and disconnect devices from a wireless network, all without joining it. It runs on Kali, and we'll cover installing, configuring, and using its jamming functionalities on a smal ...more

Apple has finally given Siri the power to tell you things such as your current elevation and the ETA to your destination during navigation in Maps, thanks to the iOS 17.2 software update — but those aren't the biggest Siri improvements. The most significant update to Siri with ...more

Apple's latest big software update includes an entirely new Apple app, a controversial change in the TV app, better Siri control, an improved Shortcuts app, interesting Safari upgrades, Apple Music Sing, and more. Keep reading to see what iOS 16.2 has to offer your iPhone. Th ...more

Rumors about the 2022 iPhone series stirred well before the iPhone 13 models were even released. While Apple remains quiet on the next big iPhone, as it always does, we're seeing more and more leaks and reveals for the iPhone 14 series as we lead up to a likely fall release. ...more

Apple just seeded developers and public beta testers the GM (golden master) for iOS 14 on Tuesday, Sept 15. The update (18A373) comes just after Apple's "Time Flies" event, and six days after Apple released iOS 14 beta 8 for both developers and public testers. Apple released ...more

Apple just released public beta 2 for iOS 14 today, Thursday, July 9. The good news comes two days after Apple released the second iOS 14 developer beta, and 17 days after the release of the first developer beta. While this is the first public beta for iOS 14, it's called "pub ...more

Apple just released the second developer beta for iOS 14 today, Tuesday, July 7. The update comes 15 days after Apple seeded developers the first iOS 14 beta, which introduced home screen widgets, picture-in-picture, and 4K YouTube support, among more than 200 other features. ...more