Open Sentry Safe Without Code

After setting up your phone, there are a number of things you should do immediately before download your favorite apps. Specifically, now that your data is on the device, you need to take steps now to ensure it's both protected and retained. Fortunately, most of these steps ar ...more

Carrier-branded Galaxy S9 models come with a ton of bloatware that you usually can't get rid of without rooting. With a little digital elbow grease, however, there is a way to disable bloatware on your S9 or S9+, and it's a lot safer that attempting to root and modify you prec ...more

OnePlus has now officially upgraded both the 5 and 5T to Android 8.1 Oreo. As implied by the version number, this isn't a huge update from Android 8.0 Oreo. However, OnePlus has included a few of their own features as well. Android 8.1 Oreo acts more as a revision to Android ...more

After a long hiatus, we shall once again emerge from the shadowy depths of the internet to build an exploit. This time, we'll be looking at how to defeat a non-executable stack by using the ret2libc technique — a lean, mean, and brilliant way of exploiting a stack overflow vul ...more

While installing the new Android 9.0 Developer Preview is fairly easy if you're using a Windows machine, it's a little trickier if you want to use macOS instead. To help you get the latest Android OS on your Google Pixel phone, we'll break down the whole process so using your ...more

Mobile World Congress is a four-day event that is both a showcase and conference starring prominent figures in the mobile industry. Oftentimes, OEMs will use this event to announce new products for the upcoming year — and this year shouldn't be any different. Here are all the ...more

Thanks to iCloud and AirDrop, it's really easy to sync photos between an iPhone and a Mac. But if you have an Apple phone and a Windows computer, this process isn't quite as simple. Thankfully, Microsoft has just released a new iPhone app that makes it a breeze to move photos ...more

Dating websites allow you to see a person in a very intimate context, framing their successes and accomplishments in life to an important audience. The information contained in these profiles often can't be found elsewhere, offering a unique look into the personal life of the ...more

As a developer, before you can make augmented-reality robots that move around in the real world, controlled by a user's finger, you first need to learn how to harness the basics of designing AR software for a touchscreen interface. In recent years, the vernacular for referrin ...more

As with most social media platforms, Instagram can be a double-edged sword. On one hand, it's a great way to share and express yourself — but on the other, it can be just as effective at compromising your privacy. Thankfully, there are a few things you can do to protect yourse ...more

While it's easy enough to make yourself invisible on Snap Map, nothing is quite as private as not having a Snapchat account at all. Whether you're concerned about your privacy or you simply never signed up for the social media platform, Snapchat's web-based map is an easy way ...more

One unique feature of Firefox Mobile is extensions. Extensions allow users to add in features that didn't originally come with the browser. These add-ons provide an array of features, including improvement to privacy and security. There are a number of steps you can take to i ...more

Because it sources a majority of its vital data from actual drivers on the road, Waze is easily one of the best navigation apps to use if you prioritize safety. Benefits such as crowd-sourced traffic data, police trap locations, and road work avoidance, when combined, help you ...more

When you accidentally close out of an important tab on your iPhone, Safari's "Recently Closed Tabs" list really comes in handy. However, when it comes time to clear the list, things get a bit complicated. There's no "Delete" or "Erase" button on this page, but don't let that f ...more

Almost certainly, you've closed out of a webpage that you didn't want to at some point in your iPhone-owning life. Whether you accidentally swiped the tab away or closed it only to need it moments later, tab-regret is just a part of our internet culture. Luckily, Safari on iOS ...more

If you want to automate tasks with your smartphone, IFTTT is a great app. It does a tremendous job of helping you find applets or creating your own from scratch, so it's easy to connect your favorite online services and make them react to each other. With all this personal inf ...more

One thing that makes Apple great is the connectivity between its products. Many tasks you do on an iPhone can be switched over to a Mac or iPad quickly and easily. The Notes app is no exception to this advantage, but you need to make sure you're set up so that your notes sync ...more

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

Coinhive, a JavaScript cryptocurrency miner, was reportedly discovered on the BlackBerry Mobile website. It was placed there by hackers who exploited a vulnerability in the site's e-commerce software that allowed them to anonymously mine cryptocurrency every time the website w ...more

Gboard is one of the best third-party keyboards available for iPhones, but you probably don't know everything you need to know about it to become a real Gboard pro and stop using Apple's stock keyboard for good. I've tried many third-party keyboards on my iPhone since they we ...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

Over the years, the internet has become a dangerous place. As its popularity has increased, it has attracted more hackers looking to make a quick buck. However, as our dependency on the web grows, it becomes increasingly difficult to sever all ties. This means we have to prote ...more

One of Android's most glaring weaknesses is its lack of an iMessage equivalent. That is, of course, until now. There's one app that will allow Android users to experience iMessage on their non-Apple phone, complete with end-to-end encryption, message effects, and group messagi ...more

When it comes to your security, you want the best of the best. Why settle for mediocre service with something as valuable as your protection? Malware continues to make its way onto the Play Store, leaving millions of devices vulnerable. You need an app that will shield your de ...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

Many guides on Null Byte require using the Secure Shell (SSH) to connect to a remote server. Unfortunately for beginners, learning to use SSH can become a confusing mix of third-party programs and native OS support. For Chrome OS users, using SSH is even more difficult. We'll ...more

Many people think antivirus apps are useless — why pay a subscription fee when most malware can be avoided with common sense? But the thing is, there were an estimated 3.5 million malicious Android apps discovered last year, with many of them making their way onto the Play Sto ...more

Format strings are a handy way for programmers to whip up a string from several variables. They are designed to save the programmer time and allow their code to look much cleaner. Unbeknownst to some programmers, format strings can also be used by an attacker to compromise the ...more

The one thing that separates a script kiddy from a legitimate hacker or security professional is the ability to program. Script kiddies use other people's tools, while hackers and security pros write their own tools. To that end, we're going to see how a stack overflow vulnera ...more

Configuring onion services for the first time can be tricky. A surprising number of system administrators make seemingly trivial mistakes that ultimately lead to catastrophic cases of de-anonymizing supposedly anonymous sites on the dark web. OnionScan is a tool designed to id ...more

Last week, augmented reality startup Proxy42 released Father.IO, a multiplayer game that turns any indoor or outdoor space into a laser tag arena. A $40 Bluetooth-connected, infrared sensor-equipped device called the Interceptor converts your standard iPhone or Android smartp ...more

With iOS 11.2's introduction of Apple Pay Cash, you can send and receive money to others directly through iMessage, using the convenience and security Apple Pay is known for. However, if you want to make sure your efforts go uninterrupted, you'll want to make sure you verify y ...more

Mozilla's Firefox has always been a highly praised internet browser. Since it's open-source, users know what they're getting without any secrecy. It's got plenty of features that are unmatched by any of its competitors on mobile. However, speed and performance have always been ...more

Being able to write your own hacking tools is what separates the script kiddies from the legendary hackers. While this can take many forms, one of the most coveted skills in hacking is the ability to dig through the binary files of a program and identify vulnerabilities at the ...more

It looks like there is a fatal flaw in the current macOS High Sierra 10.13.1, even straight from the login menu when you first start up the computer. This severe vulnerability lets hackers — or anyone with malicious intentions — do anything they want as root users as long as t ...more

Shodan calls itself "the search engine for internet-connected devices." With so many devices connected to the internet featuring varying levels of security, the special capabilities of this search engine mean it can provide a list of devices to test and attack. In this tutoria ...more

Facebook really wants your phone number, nagging you for one as soon as you join. This isn't all bad since it can help secure your account with two-factor authentication. On the flipside, this makes it easy to reveal the private phone numbers of virtually anyone on Facebook, i ...more

Threats to your privacy and security are everywhere, so protecting your data should be the highest priority for anyone with a smartphone. However, one threat many people overlook is the company who supplies the operating system your Android phone runs — Google. Google offers ...more

JavaScript is one of the most common languages used on the web. It can automate and animate website components, manage website content, and carry out many other useful functions from within a webpage. The scripting language also has many functions which can be used for malicio ...more

Networking is built largely on trust. Most devices do not verify that another device is what it identifies itself to be, so long as it functions as expected. In the case of a man-in-the-middle attack, we can abuse this trust by impersonating a wireless access point, allowing u ...more

So, your grandmother finally wants to ditch her flip phone for a shiny new smartphone? Congratulations. But helping her get used to her new device, even when it's an iPhone, is no small task. Grandma mastered checking her email in late-2012 and just recently learned there's a ...more

Internet Relay Chat, or IRC, is one of the most popular chat protocols on the internet. The technology can be connected to the Tor network to create an anonymous and secure chatroom — without the use of public IP addresses. IRC servers allow one to create and manage rooms, us ...more

Aside from the second-generation iPhone SE, all new iPhone models since the iPhone X have had Face ID instead of Touch ID as the biometric authentication technology. While Touch ID can be touchy, Face ID is not without its own issues. If you can't get Face ID on your iPhone to ...more

In a previous article, we learned how to take advantage of a feature, Dynamic Data Exchange (DDE), to run malicious code when a Microsoft Word document is opened. The biggest challenge of this attack is that it requires getting the user to agree to a pop-up prompt. Fortunately ...more

While hackers adore the command line, working with the GUI (graphical user interface) of an operating system has some advantages. This is especially true when it comes to post-exploitation. When we can control the mouse and keyboard of a remote computer, we can truly say we ha ...more

If you own a Pixel or Nexus device, Project Fi is a great alternative for cellular service outside of the four major US carriers. Project Fi is a Google-managed MVNO, providing service primarily through the T-Mobile and Sprint networks. One of the biggest mysteries on Fi is wh ...more

Ransomware is software that encrypts a victim's entire hard drive, blocking access to their files unless they pay a ransom to the attacker to get the decryption key. In this tutorial, you'll learn how easy it is to use the USB Rubber Ducky, which is disguised as an ordinary fl ...more

Google just released the second developer preview of the Android 8.1 update for Nexus and Pixel devices, and even though it's just a point-one release, there are lots of cool changes. Before you run off to join the Android beta program and try the new version, it's worth readi ...more

A mention of the deep web can bring to mind images of drugs, hackers, and other criminal activity. Despite the presence of these elements, the Tor network is a valuable tool for preserving privacy and anonymity. And browsing the deep web and any hidden services can be as simpl ...more

While other devices are moving away from fingerprint scanners (cough, iPhone X), for many, a fingerprint scanner provides the best balance between security and speed. Typically, the rear fingerprint scanner on the LG V30 is quick and accurate, but every so often the phone will ...more

When we are building programs that communicate over a network, how can we keep our data private? The last thing we want is some other lousy hacker sniffing our packets, so how do we stop them? The easy answer: encryption. However, this is a very wide-ranging answer. Today we'r ...more

Due to the overnight success of smartphones, millions of people are connecting with others. Currently, over 15 million text messages are sent every minute worldwide. Most of this communication is happening in the open where any hacker can intercept and share in the discussion ...more

Code execution in Microsoft Word is easier than ever, thanks to recent research done by Etienne Stalmans and Saif El-Sherei. Executing code in MS Word can be complicated, in some cases requiring the use of Macros or memory corruption. Fortunately, Microsoft has a built in a fe ...more

After numerous scandals like the Equifax data breach and the 2016 US election, cybersecurity has become a significant issue for Americans. Unfortunately, anytime we use our devices, we're open to a cyber attack — especially when we browse the web. However, there are ways that ...more

In this chapter, we want to start seeing some real progress in our dynamic user interface. To do that, we will have our newly crafted toolset from the previous chapter appear where we are looking when we are looking at an object. To accomplish this we will be using a very usef ...more

Hacking from a host machine without any form of proxying is reckless for a hacker, and in a penetration test, could lead to an important IP address becoming quickly blacklisted by the target. By routing all traffic over Tor and reducing the threat of malicious entrance and exi ...more

ARKit is a marketer's dream. By providing tools for creating augmented reality experiences on mobile devices, AR apps can now be deployed easily alongside just about any campaign. As expected, we now have ARKit apps pushing wares ranging from automobiles to tequila. Of course ...more

Kali Linux is the obvious first choice of an operating system for most new hackers, coming bundled with a curated collection of tools organized into easy-to-navigate menus and a live boot option that is very newbie-friendly. But Kali isn't the only distribution targeted at pen ...more

As we have seen previously with the likes of SethBling's Mar I/O videos and other examples, video games seem to be a great source for training AI neural networks. Augmented reality and machine learning are part of a collection of technologies that seem to be growing toward a p ...more