Use Multiple Functions for One Cell in Excel

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

Smartphones and laptops are constantly sending Wi-Fi radio signals, and many of these signals can be used to track us. In this guide, we'll program a cheap IoT device in Arduino to create hundreds of fake networks with common names; This will cause nearby devices to reveal the ...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

Apple officially released iOS 12 to everyone on Sept. 17, and while the new iPhone XR, XS, and XS Max will come with the software by default, you have a choice on whether or not to update your current iPhone model from iOS 11. There are a lot of tempting features to want to up ...more

Right before the Labor Day weekend, Apple issued iOS 12 developer beta 12, which comes four days after dev beta 11 and public beta 9, and just one day after announcing the Sept. 12 event. This update primarily fixes a bug where you would be continuously prompted to install a n ...more

Give an 18-month-old a shoe, check back 10 minutes later, and it's a very big maybe he will have it on his foot. But give him your smartphone, and in a mere five minutes, he can take 100 pictures of the carpet, send weird messages, and delete essential apps. Imagine what your ...more

In a surprise twist, Apple released iOS 12 public beta 8 to software testers on Thursday, Aug. 23, right alongside iOS 12 dev beta 10. The release comes as a bit of a shock, as the company released iOS 12 public beta 7 just three days earlier. The official build of iOS 12 now ...more

Apple released the tenth iOS 12 developer beta unexpectedly Thursday afternoon, Aug. 23. The update comes only three days after the release of iOS 12 developer beta 9, a surprising move for Apple, even with the irregular releases the company has made in recent weeks. Dev beta ...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

The calendar app is one of the unsung heroes found within your iPhone. It's the ultimate personal assistant that you've come to rely on to keep track of your schedule and ensure you never miss a class or meeting, all while reminding you of upcoming birthdays and deadlines to h ...more

You may have heard of a signal jammer before, which usually refers to a device that blasts out a strong enough radio signal to drown out the reception of nearby devices like cell phones. Purpose-built jammer hardware is outright illegal in many countries. Still, Wi-Fi is vulne ...more

According to Google at their 2018 I/O conference, Google Assistant is now available on over 500 million devices. Now that the assistant is available on iPhones as well, Google has to give iOS users a reason to switch to its assistant over the built-in Siri. Today, Google has e ...more

I love my iPhone, but it would be a lie to say there aren't some Android features I wish would find their way to iOS. While iOS has plenty of its own advantages, Android has pulled ahead in many other areas. With iOS 12 coming later this year, we're hoping Apple takes a hint f ...more

If you want to follow Null Byte tutorials and try out Kali Linux, the Raspberry Pi is a perfect way to start. In 2018, the Raspberry Pi 3 Model B+ was released featuring a better CPU, Wi-Fi, Bluetooth, and Ethernet built in. Our recommended Kali Pi kit for beginners learning e ...more

While Wi-Fi networks can be set up by smart IT people, that doesn't mean the users of the system are similarly tech-savvy. We'll demonstrate how an evil twin attack can steal Wi-Fi passwords by kicking a user off their trusted network while creating a nearly identical fake one ...more

While you were busy browsing Instagram, composing tweets, or chasing Snapchat updates, an eight-year-old ARKit developer was hard at work on her first step toward taking over the tech world via augmented reality. A new app called A.R.tist, created by Nova Fleming, allows user ...more

Smartphones are like high tech buckets that collect our personal information through constant use. This has some obvious benefits, like getting a more personalized experience with our devices. On the other hand, this data is a tempting target for bad actors looking to make a b ...more

A core concept that has resonated through societies of the world over the course the last few hundred years is "knowledge is power." And understanding that concept gives us the drive to push further forward and learn as much as we can on a subject. At the moment, that subject ...more

One of the more unique aspects of Fortnite Battle Royale is the ability to create structures. Using in-game materials, players can create walls and ramps for cover and to extend mobility. But creating isn't limited to just the basic generic structures. To really maximize their ...more

Design flaws in many routers can allow hackers to steal Wi-Fi credentials, even if WPA or WPA2 encryption is used with a strong password. While this tactic used to take up to 8 hours, the newer WPS Pixie-Dust attack can crack networks in seconds. To do this, a modern wireless ...more

When you don't want somebody you're calling to know the real phone number associated with your iPhone, whether it's for privacy reasons, to avoid being called back, or to prevent being ignored, there are multiple things you can do to block it on their caller ID. Some of the b ...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

With Virtual Network Computing, you don't need to carry a spare keyboard, mouse, or monitor to use your headless computer's full graphical user interface (GUI). Instead, you can connect remotely to it through any available computer or smartphone. Virtual Network Computing, be ...more

PowerShell Empire is an amazing framework that is widely used by penetration testers for exploiting Microsoft Windows hosts. In our previous guide, we discussed why and when it's important to use, as well as some general info on listeners, stagers, agents, and modules. Now, we ...more

Thanks to Metaverse, it has never been this easy to create your own AR game. The platform gives users a web-based tool for building interactive AR experiences, with no coding knowledge necessary. Via a link or QR code, users can then share their project with others, who can v ...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

Trivia games are among the most entertaining ways to learn factoids and interesting info you may have never known about before. They're also the perfect genre to enjoy with friends and family, as they're particularly great at breaking the ice to make for a more memorable time ...more

Because of the way Google Play works, Android has a "bad app" problem. Google allows any developer to upload an app to the Play Store, regardless of if it works, how it looks, or whether or not it can harm users. Malware scanning happens primarily after apps are uploaded, and ...more

Andre was enjoying the carefree life of a 12-year-old with his friends, riding his bike and playing sports, like all kids that age. Schoolwork wasn't hard for him, and his grades showed that. Then, the headaches began. He lost vision in one eye, symptoms that drove his famil ...more

A vaccine against HIV might prevent the disease that we can't seem to cure. Some HIV patients make antibodies that can take down the virus, much the way a vaccine might. But, scientists haven't been able to provoke that type of response in other people. However, in a process t ...more

Imagine for a moment that a VPN is like putting on a disguise for your computer. This disguise works to change your IP address, secure your traffic with encryption, and mask your location to bypass regional restrictions. This makes it a helpful tool for both whistleblowers and ...more

The intestinal parasite Cyclospora cayetanensis has a dramatically increased infection rate this summer, and the source is still unknown, the CDC advised today. 2017 is a good year for Cyclospora looking for homes to start their families and a bad year for those of us who don' ...more

Whether your palate runs to domestic or imported, a piece of cheese can be a real treat for the senses. Its smell, taste, and texture are all parts of its appeal. A big part of what makes that savory wonderfulness comes from the microbes in and on the cheese. Thanks to a team ...more

While some researchers look for drugs to treat HIV, other scientists delve deep into the virus itself for answers on how it causes infections. Using two supercomputers, University of Illinois research scientist Juan R. Perilla and late physics professor Klaus Schulten simulat ...more

During the millions of years they've been on earth horseshoe crabs have developed a trick that can save our lives even now — and may be especially useful in the fight against healthcare-associated infections. The living fossils we call horseshoe crabs are not real crabs, and ...more

As our cells age, they eventually mature and die. As they die, they alert nearby cells to grow and multiply to replace them. Using a special imaging process that combines video and microscopy, scientists have observed the cellular communication between dying and neighboring ce ...more

A new study casts real suspicion on the possibility of life on Mars. Why? It seems the surface of the planet may be downright uninhabitable for microbial life as we know it. Over the years, and with research into life on other worlds, visions of extra-terrestrials and "little ...more

Deadly rat lungworm parasites have found their way into Florida. The parasitic worm relies on snails and rats to complete its life cycle, but don't let this nematode's name fool you. This worm can cause meningitis and death in humans who inadvertently consume snails, frogs, or ...more

If the all the fingerlike projections in our gut were flattened out, its surface area would be 100 times bigger than our skin's. It's so large that the actions of just a small part of it can impact our health. A new research study has found that enterochromaffin cells in the i ...more

We know that healthcare-related facilities can be fertile ground for antibiotic-resistant bacteria, but recent research suggests your produce aisle might be too. In a presentation at a meeting of the American Society for Microbiology, researchers from California State Univers ...more

The problem with HIV is that it attacks and kills the very cells of the immune system that are supposed to protect us from infections — white blood cells. But a new technique, developed by scientists at The Scripps Research Institute (TSRI) in La Jolla, California, offers a di ...more

Bioluminescence — the ability of an organism to produce and emit light — is nature's light show. Plants, insects, fish, and bacteria do it, and scientists understand how. Until now, though, we didn't know how fungi glow. Now, thanks to research led by Zinaida Kaskova in the I ...more

The evolution of our infection-fighting systems may have something to teach modern scientists. That's what a group from the University of Granada in Spain found when they studied a protein that's been around for over four billion years. Their work, by senior author José Sánche ...more

Architects are natural candidates to be early adopters of mixed reality. Their trade consists of not only designing buildings and spaces, but also presenting those designs to clients, who then decide that their vision is worth spending thousands (if not millions or billions) ...more

One of the truly beautiful things about the HoloLens is its completely untethered, the-world-is-your-oyster freedom. This, paired with the ability to view your real surroundings while wearing the device, allows for some incredibly interesting uses. One particular use is trigge ...more

Phase 2 of a Zika vaccine trial began in the United States this week, along with Central and South America. The vaccine was developed by expert scientists at the National Institute of Allergy and Infectious Diseases (NIAID), which is part of the National Institutes of Health, ...more

Call them what you will—moss piglets, water bears, or by their real name, tardigrade—but these intriguing tiny creatures can come back from the brink of death. They can survive boiling, deep freezing, UV radiation, completely drying out, and even a trip to space—without the be ...more

A rose by any other name may smell as sweet, but one annoying invasive weed may hold the answer to treating the superbug MRSA. Researchers from Emory University have found that the red berries of the Brazilian peppertree contain a compound that turns off a gene vital to the dr ...more

With tools such as Reaver becoming less viable options for pen-testers as ISPs replace vulnerable routers, there become fewer certainties about which tools will work against a particular target. If you don't have time to crack the WPA password or it's unusually strong, it can ...more

A new study just out reveals that HIV takes hold in the human body with the help of cells that usually work to heal, not kill. HIV invades the body through genital or rectal mucous membranes. Exactly how that occurs on a molecular level was not understood until now. The study ...more

What's in a sneeze? Quite a lot—dirt, mucus, and infectious germs—it seems. And sneezing the right way can reduce the germs you share with neighbors. It's just a sneeze right? Everybody sneezes. So if you share a few germs when you are sick (or not sick), it's not such a terr ...more

To shine light on the future of the relationship between humans and viruses, a team of researchers from the University of Oxford looked into the dim and distant past. Without the capability to reproduce on their own, viruses infect other organisms, literally inserting their D ...more

No one can dispute the evolutionary success of bugs. The oldest insect fossils were found encased in crystallized mineral silica in Scotland in 1926, and they're between 396 and 407 million years old. Insects have seen dinosaurs come and go. They have survived disruptions to ...more

As researchers learn more and more about our intestinal bacteria—also called the gut microbiome—we're finding out that these microbes aren't just influencing our health and wellness, they're a useful tool for improving it, too. The bacteria in our intestinal tract must proper ...more

Bacteriotherapy sounds a lot more amenable of a term than "fecal transplant," yet they're both treatments that use bacteria itself to cure or treat infections. Fecal transplants, specifically, are an up-and-coming treatment option for a potentially deadly and difficult-to-trea ...more

The story of Helicobacter pylori is a real testament to the tenacity of medical researchers to prove their hypothesis. It took decades before the scientific world would accept that the bacteria H. pylori caused ulcers. Now that we know the bacterial culprit can cause peptic u ...more

Google's new Project Fi cellular carrier has been making waves across the mobile industry, so we decided to put it to the test against T-Mobile, one of the more established networks. For the actual testing, we slapped a SIM card from each carrier into two identical Pixel XL ph ...more

Google is on a mission to bring a better messaging experience to Android users. We've seen them try and fail over the years with various messenger apps, but this time, they're taking a different approach by working with industry leaders to create a new messaging standard. The ...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

Codenamed "Nougat" after the sugary stuff that fills your Snickers bar, Android 7.0 is living up to its name with tons of sweet features. There's almost too many changes over Marshmallow to cover in one go, with new functionality ranging from a revamped Doze Mode for battery s ...more