How to Change Windows Login Screen

The tactic of brute-forcing a login, i.e., trying many passwords very quickly until the correct one is discovered, can be easy for services like SSH or Telnet. For something like a website login page, we must identify different elements of the page first. Thanks to a Python to ...more

Catching up with Windows 8, Apple has finally included a way in Mac OS X to use two apps side by side in full screen view. In the 10.11 El Capitan update, it's called Split View, and it works fairly well for the most part. It's not quite as intuitive as it should be, but easy ...more

We are most certainly not machines. We all need some downtime every once in a while to set our sanity scales back in balance, which in turn, makes us more productive workers. This is a premise that several forward-thinking employers fully understand, but these types of compani ...more

The iPhone has come a long way in its ten-year lifespan, but one thing still missing from the core user experience is native split-screen support. Sure, the displays on iPhones aren't nearly as large as an iPad's screen — which does offer "Split View" mode out of the box — but ...more

Slowly but surely, Microsoft is pushing more and more options out of the Control Panel and into a new menu simply called Settings. This new Settings menu debuted with Windows 8 and mainly focused on touchscreen-related options, but starting with Windows 10, you'll find quite a ...more

Android's biggest selling point over alternatives like iOS or Windows Phone is the level of customization that it offers. If you don't like something about the UI, you can change it, whether it's as small as an icon set or as big as the entire home screen. Developer Marcel Do ...more

Keeping your operating system up to date is essential to keeping it bug-free and running properly. Windows regularly pushes out patches and security fixes through Windows Update, so making sure to turn on Automatic Updates or checking at least once a week is strongly advised. ...more

BlinkFeed completely changed the way I access new updates from Facebook and Twitter, but when I switched to the Google Play Edition of the HTC One, I lost access to the launcher. BlinkFeed is available in the Google Play Store, but HTC has not opened it up yet for all devices ...more

The photo-centric Instagram app is a great way to share "evergreen" pictures and videos when compared to Snapchat and Facebook's new Messenger Day feature. But like all social media, keeping the account secure is an essential aspect, as it restricts unwanted viewers from seein ...more

Connecting to your headless Raspberry Pi on the go typically requires a network connection or carrying around bulky peripheral hardware like a screen and keyboard. With the help of an old-school connecting standard, though, you can log into your Pi from any computer using a si ...more

The Windows 10 desktop and microphone can be livestreamed without using Remote Desktop Protocol (RDP) software and without opening any ports on the target computer. A hacker with low user privileges can monitor and exfiltrate a target's every move and private conversation in r ...more

In 2019, the Raspberry Pi 4 was released with specs including either 1 GB, 2 GB, or 4 GB of memory, a Broadcom BCM2711B0 quad-core A72 SoC, a USB Type-C power supply, and dual Micro-HDMI outputs. Performance and hardware changes aside, the Pi 4 Model B runs Kali Linux just as ...more

Security-minded users can reduce the risk of phishing by enabling Advanced Protection on important Google accounts, requiring a U2F security token to log in. Using these keys isn't intuitive on most popular smartphone platforms, and you can find yourself locked out if you don' ...more

It's easy to run Kali Linux from a live USB on nearly any available computer, but many publicly accessible laptops and desktops will be locked down to prevent such use. School, work, or library PCs can be secured with a BIOS password, which is often an easily recovered default ...more

The Pi-hole project is a popular DNS-level ad blocker, but it can be much more than that. Its DNS-level filtering can also be used as a firewall of sorts to prevent malicious websites from resolving, as well as to keep privacy-killing trackers such as Google Analytics from eve ...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's macOS operating system is just as vulnerable to attacks as any Windows 10 computer or Android smartphone. Hacker's can embed backdoors, evade antivirus with simple commands, and utilize USB flash drives to completely compromise a MacBook. In this always-updated guide, ...more

The option to auto-fill passwords on your iPhone has been around a while now, but iOS 12 improves on it by suggesting strong passwords when first creating an account online in Safari or within apps. Apple has also added "password reuse auditing" for your iCloud Keychain, where ...more

For all those times when an app either isn't available or simply won't cut it, your phone's internet browser provides access to your favorite websites and services. But some browsers are flat-out better than others, and chances are, the browser that came pre-installed on your ...more

This is the second installment of the short series on how to remove user passwords in Windows. Once again this has only been tested on Windows 7. If I can find some time between two jobs and school I'll test all the ways on Windows 10 and Windows 8/8.1. Step 1: Startup Repair ...more

Welcome back, my tenderfoot hackers! In this series, we are exploring the myriad of ways to hack web applications. As you know, web applications are those apps that run the websites of everything from your next door neighbor, to the all-powerful financial institutions that ru ...more

At a closed-door presentation on September 30th, 2014, Microsoft unveiled the latest iteration of its industry-leading operating system. Dubbed Windows 10 (seems as if Redmond isn't too fond of the "9" moniker), this new version brings along with it many UI optimizations and u ...more

Many of our online accounts now come with an added two-factor authentication (2FA) functionality to help keep our data safe. This essentially means no one would be able to access the account until a specific set of requirements were met. It could be a combination of a password ...more

TouchDevelop is a browser-based programming tool that allows anyone to build your own Windows 8 apps directly from any touchscreen device, including iPad, iPhone, Windows Phone, Android, PC and Macs. Once the script is created and the app proves to work, it can be placed in th ...more

My girlfriend was going away for a few weeks, but where she was going, there was no easily accessible Internet. She works mostly on the web, so it was imperative that she have a decent Internet connection during her travels. So, tethering her phone was the only real possibilit ...more

Virtual private networks, or VPNs, are popular for helping you stay anonymous online by changing your IP address, encrypting traffic, and hiding your location. However, common IoT devices, media players, and smart TVs are hard to connect to a VPN, but we have a solution: Turn ...more

Kali Linux is established as the go-to operating system for penetration testing, but in its default configuration, it's less than ideal for regular desktop use. While in many scenarios, a live boot or virtual environment can resolve these issues, in some situations, a full ins ...more

Windows 10 passwords stored as NTLM hashes can be dumped and exfiltrated to an attacker's system in seconds. The hashes can be very easily brute-forced and cracked to reveal the passwords in plaintext using a combination of tools, including Mimikatz, ProcDump, John the Ripper, ...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

In 2013, Offensive Security released Kali Linux, a rebuild of BackTrack Linux derived from Debian. Since then, Kali has gone on to become somewhat of a standard for penetration testing. It comes preconfigured with a collection of tools accessible by a menu system, tied togethe ...more

There are many ways to take a screenshot in macOS (previously Mac OS X), but all of the well-known options give you a drop shadow in the picture when snapping application windows. If you use the Command Shift 3 shortcut, it takes a screenshot of the entire screen. If you use ...more

Many popular IoT devices have terrible security. For instance, a hacker who's on the same Wi-Fi network as a Sonos speaker can assume direct control over the device's behavior. If an IoT device doesn't secure the messages used to control it over a network, it's easy for somebo ...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

Welcome to Minecraft World! Check out our tutorials, post to the community corkboard, and come play on our free server! Minecraft 1.2.5 has been planned for a few days now, but Jeb wanted to wait for modders to catch up to the new changes. This time around, things should run ...more

Having an SSH or Secure SHell to tunnel your traffic through is something we have talked about many times at Null Byte. As we know, it allows us to securely route and encrypt our traffic through a remote server, effectively anonymizing us and protecting our traffic from all fo ...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

While iOS 11 is ready to take over your iPad, iPhone, and iPod touch, let's take a step back and check out all of the new features that iOS 10 brought to the public when it was released to everyone in Sept. 2016. Some of the updates from iOS 9 to iOS 10 were huge, as you'll s ...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

When it comes to sharing files between a smartphone and a computer, there are several solutions available for a Windows and Android pairing. But for those of us with Apple devices, the selection of apps in this category isn't quite as great. You can use AirDrop to quickly shar ...more

For many of us, our work phone and our personal phone are one and the same. Just any old phone isn't going to cut it when you need to meet a deadline — a phone with built-in features that make it easier to get things done is almost a must. For this article, we defined product ...more

While it's easy enough to take a screenshot of an end-to-end encrypted Telegram chat thread using an iPhone, it's an entirely different story on Android phones. Telegram disables screenshots for Secret Chats by default on Android, and not everyone can turn it on. Sometime in ...more

Greetings null-bytians. Firstly, I would like to apologize for the no images thing. I guess I can't upload them. If you have watched the documentary titled "In the Realm of the Hackers", the one about two Australian hackers, Electron and Phoenix, you will know that it was a g ...more

One of the few areas where Android lags behind iOS is a comprehensive backup solution for apps. Root tools, such as the popular Titanium Backup, are capable of backing up all of your apps and their data, but not everyone wants to root their device and potentially run into issu ...more

The desktop layout in Mac OS X Yosemite is undeniably beautiful—it's sleek, simple, and easy to admire. Thing is, I do too much on my Mac to install a developer preview as my main OS (even though I can make a bootable install drive and dual-boot it), but I do want the aestheti ...more

Welcome back, my neophyte hackers! Digital forensics is one of the fields often overlooked by aspiring hackers. In a rush to exploit every and any system they can, they often ignore learning digital forensics—the field that may lead to them being traced. In addition to learn ...more

One of the best features of Android is the fact that it's open-source, giving developers the ability to use it on pretty much any device they can think of, like on a Windows PC using Andy. That's what drove the creators behind the Android-x86 project to port over the mobile OS ...more

Since the San Bernardino shooting in 2014, Apple's been engaged in a game of cat and mouse with law enforcement. Authorities want access to evidence on criminals' iPhones, but Apple wants to protect all of its customers' personal data equally. The latest installment in this sa ...more

OpenBSD implements security in its development in a way that no other operating system on the planet does. Learning to use the Unix-like operating system can help a hacker understand secure development, create better servers, and improve their understanding of the BSD operatin ...more

During a power outage at my apartment this year, I watched movies on my MacBook Pro instead of on my television. While I had no complaints about the screen size, I did have an issue with how low the audio coming from my speakers was. External speakers would help, but I don't w ...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

Kali Linux has come a long way since its BackTrack days, and it's still widely considered the ultimate Linux distribution for penetration testing. The system has undergone quite the transformation since its old days and includes an updated look, improved performance, and some ...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

While password cracking and WPS setup PIN attacks get a lot of attention, social engineering attacks are by far the fastest way of obtaining a Wi-Fi password. One of the most potent Wi-Fi social engineering attacks is Wifiphisher, a tool that blocks the internet until desperat ...more

We've all seen the login pages that allow you to log in to third-party accounts using your credentials from Facebook, Google, or Twitter. It saves you the trouble of creating another account and remembering more passwords — but it can also become a privacy and security issue, ...more

With a tiny computer, hackers can see every website you visit, exploit services on the network, and break into your Wi-Fi router's gateway to manipulate sensitive settings. These attacks can be performed from anywhere once the attacker's computer has been connected to the rout ...more

Remote Desktop gives you access to your Windows 8 PC or device from wherever you are to run your applications and access your files remotely. Left an important document on your work computer? Want to run a legacy x86 desktop app from your Surface? You can use Remote Desktop ...more

As great as the Internet is, it is not without its dangers. Hackers at any time may be breaking into your online accounts and compromising your sensitive information. Last year, hackers broke into Facebook, Gmail, and Twitter and made off with 2 million stolen passwords. It's ...more

While SSH is a powerful tool for controlling a computer remotely, not all applications can be run over the command line. Some apps (like Firefox) and hacking tools (like Airgeddon) require opening multiple X windows to function, which can be accomplished by taking advantage of ...more

ARP spoofing is an attack against an Ethernet or Wi-Fi network to get between the router and the target user. In an ARP-spoofing attack, messages meant for the target are sent to the attacker instead, allowing the attacker to spy on, deny service to, or man-in-the-middle a tar ...more

Using a keylogger to intercept keys pressed on an infected computer can circumvent encryption used by email and secure chat clients. The collected data can often reveal usernames, passwords, and potentially compromising and private information which hackers abuse for financial ...more