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How To: Use the inverse cotangent function in Excel

This video tutorial shows how to use the Excel function ACOT. This function determines the inverse cotangent of a number within a spreadsheet program

How To: Use the inverse hyperbolic sine function in Excel

This video demonstrates how to use the Excel function ASINH. This program determines the inverse hyperbolic sine of a number within a spreadsheet program.

How To: Start a perennial garden

Our gardening expert will explain how to set up your perfect perennial plant business. Learn which plants go together, how to position the plants for just the right amount of sun, and how to determine if your adjustment has been successful. Are the flowers, shrubs and grasses happy after all of the work you have put in to meet their needs? Once you have mastered the basic care and maintenance of your garden, then you can concentrate on working toward exactly the look you want. Martha Cycz dis...

How To: 5 Major Privacy Concerns with 5G

For all the benefits 5G brings to cellular data, it isn't without weaknesses, the biggest being privacy. Yes, the latest standard comes with breakneck downloads speeds up to 4.3 Gbps, but at what cost? Like with all things on the internet, 5G devices open opportunities for both good and bad actors.

How To: The Best Settings to Use for Pro Mode in Your Galaxy S20's Camera App

No matter how many camera improvements a phone adds, you're always better off using manual mode. Known as "Pro Mode" on the Galaxy S20, this feature can remove Samsung's pre- and post-processing from photos, putting you in total control.

How To: All the Sites You Can Check for Coronavirus Testing Locations

One of the scariest things about the COVID-19 virus is that you can show no symptoms but still be infected (and contagious). Naturally, we all want to know whether we're carrying the new coronavirus, but if you're showing signs of COVID-19, how can you be tested to know for sure? Websites are popping up to help with that, screening for symptoms, and directing you to a testing site if needed.

How To: Boost Internet Speeds & Hide Your Browsing History from Your ISP

If you have friends who aren't privacy-conscious, you've surely heard the old "What do I have to hide?" excuse. Despite the fact that billions of people are using the internet each day, many of them don't know the dangers that can find them. And many don't know the tools to combat them.

How To: Fix Blemishes in Photoshop Express to Get Flawless Skin in Your Selfies

You finally did it! You've combined all your knowledge about photography and angle to take the perfect selfie. It looks stunning, and you cannot wait to post that bad boy to Instagram. But wait, what's this? Your skin looks so uneven and — is that a zit!? I guess the selfie gods were not in favor of your skin when you snapped it. Luckily, you can fix all of those minor flaws with the help of Photoshop Express.

How To: Target Bluetooth Devices with Bettercap

An incredible amount of devices use Bluetooth or Bluetooth Low Energy to communicate. These devices rarely have their radios switched off, and in some cases, are deliberately used as trackers for lost items. While Bluetooth devices support MAC address randomization, many manufacturers do not use it, allowing us to use tools like Bettercap to scan for and track Bluetooth devices.

How To: Change Resolution & Bit Rate in Filmic Pro for High-Quality Video Up to 4K at 100 Mbps

Filmic Pro harnesses the full native power of your iPhone or Android phone — and then some. If your smartphone shoots in 4K resolution, Filmic Pro will let you choose that resolution. However, it's not all about the pixels — bit rate is an essential factor in determining the overall quality of your 720p, 1080p, or 4K video, something Filmic Pro gives you full control over.

News: HoloLens 2, All the Specs — These Are the Technical Details Driving Microsoft's Next Foray into Augmented Reality

Now that we've officially seen the HoloLens 2 and Microsoft has shown off the improvements and new superpowers of the augmented reality headset, what about the specs?

How To: Get an Automatic Light & Dark Theme on Android

Perhaps the best thing about Android is the endless amount of customization you can add to your device. From icon packs to custom launchers and even custom ROMs, there's truly something for everyone. One of the most popular options among Android enthusiasts is adding a system wide dark theme. The methods to do this vary, but you can now automate this process thanks to Android Oreo.

SQL Injection 101: Advanced Techniques for Maximum Exploitation

For SQL injection, the next step after performing reconnaissance and gathering information about a database is launching an attack. But something seems off .. in the real world, it's usually not quite as simple as passing in a few fragments of SQL code to an input field and seeing all that glorious data displayed right in the browser. This is when more advanced techniques are needed.

SQL Injection 101: How to Fingerprint Databases & Perform General Reconnaissance for a More Successful Attack

Know thy enemy — wise words that can be applied to many different situations, including database hacking. It is essential to performing adequate reconnaissance on a system before even thinking about launching an attack — any type of attack — and this is no different for SQL injection.

Hacking Windows 10: How to Capture & Exfiltrate Screenshots Remotely

Screenshots taken from a compromised computer can provide hackers with access to private emails, photographs, and information found in sensitive documents. This data can be used by the attackers to build profiles of a target for social engineering attacks and blackmail or even just to release the information out in the wild.

How To: 6 Reasons You Might Actually Want to Give Google Your Location Data

Google collects an enormous amount of personal data. While some of this data is used for targeted ads, others tidbits of info such as our location are used to improve our mobile experience. While it is natural for us to distrust Google's intentions, by allowing their data collection, we can add new functionality to our favorite apps.

ARCore 101: How to Create a Mobile AR Application in Unity

Now that ARCore is out of its developer preview, it's time to get cracking on building augmented reality apps for the supported selection of Android phones available. Since Google's ARCore 1.0 is fairly new, there's not a lot of information out there for developers yet — but we're about to alleviate that.

How To: 3 Tips to Get to Inbox Zero Faster in Gmail

On average, an office worker receives 121 emails a day. Many of these emails are trivial and don't require immediate attention. While Gmail's automatic spam filters catch plenty of irrelevant emails, some still make their way into your inbox. Fortunately, Gmail's tools aren't limited to just spam filters.

How To: Set a Video as the Wallpaper on Your Android's Home Screen & Lock Screen

Android users have had access to live wallpapers since the Eclair days, but some newer apps have made this feature even more useful. Now, you have the ability to use GIFs as your wallpaper, and through the marvels of modern technology, you can even set a video as your home screen and lock screen background.

How To: Detect Misconfigurations in 'Anonymous' Dark Web Sites with OnionScan

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 identify common misconfigurations in onion services and aid us in understanding how to fix them.

HoloLens Dev 101: Building a Dynamic User Interface, Part 4 (Creating Objects from Code)

After previously learning how to make the material of an object change with the focus of an object, we will build on that knowledge by adding new objects through code. We will accomplish this by creating our bounding box, which in the end is not actually a box, as you will see.

Lucky Break: Pneumococcal Vaccine Fights Off Ear Infections, Too

More prescriptions for antibiotics are written for ear infections than any other type of infection. A new study comparing the incidence and causes of ear infections in children between the ages of six months and three years found that the incidence of ear infections over the last decade has dropped significantly since the 1980s.

News: In Love? True Togetherness Means Sharing the Same Microbes

Love is the spice of life — it is also the microbes that couples share through sickness and in health, through the bathroom and in a hallway.

Medical Mystery: Man Catches Zika, but No One Knows How

An older man dies of Zika. A younger man who cares for him catches Zika — but doctors cannot pinpoint how the disease was transmitted. While proximity to the patient is sufficient explanation for the rest of us, for microbe hunters, it is a medical mystery. Why? Zika is not known to transmit from person-to-person casually.

News: Sleeping with the Fishes — Decay in Wastewater Damages Aquatic Life

Everything from disposed of drugs to hormones and disease-causing bacteria — anything that is rinsed or flushed down the drain — can contaminate wastewater.

News: Nasty Side Effects & Resistance — Do You Need More Reason to Stop Taking So Many Antibiotics?

Despite the threat of superbugs, physicians continue to prescribe antibiotics when they might not be needed, and patients are suffering.

News: New Gut Bacteria Theory Could Revolutionize Our Understanding of Diabetes

Several recent research studies have pointed to the importance of the microbes that live in our gut to many aspects of our health. A recent finding shows how bacteria that penetrate the mucus lining of the colon could play a significant role in diabetes.

News: New Research Makes Detecting Flu as Easy as a Pregnancy Test

Could your fever, body aches, cough, and sore throat be the flu? Soon, finding out may not involve a trip to the doctor.

News: SwapBots Is the Type of Idea the Mixed Reality Future Needs

The hunt for the mixed reality use-case that wins over consumers' hearts and creates a critical mass is a problem every developer would love to solve. Not only would they find themselves rich and famous seemingly overnight, but they would also end up making one of the various possible hardware solutions a viable place for other developers to put their time and energy.

News: Microbe That Causes Sepsis & Meningitis Has Mutated into a New Sexually Transmitted Disease

The ability of one microbe to adapt is giving it a whole new career as a sexually transmitted disease. Usually content with the back of the throat and nose of those who carry it, the dangerous pathogen Neisseria meningitidis has adapted to cause an illness that looks a lot like gonorrhea.

News: Scientists Show That the Earlier HIV Is Treated, the Better

HIV-infected people who are treated long-term with antiviral drugs may have no detectable virus in their body, but scientists know there are pools of the virus hiding there, awaiting the chance to emerge and wreak havoc again. Since scientists discovered these latent pools, they have been trying to figure out if the remaining HIV is the cause of or caused by increased activation of the immune system.

News: Phase 2 Zika Vaccine Trial Begins in US, Along with Central & South America

Phase 2 of a Zika vaccine trial began in the United States this week, along with Central and South America.

News: Your Doctor May Start Giving You Penicillin Even if You're Allergic

A new study has found that up to half of people who think they have a penicillin "allergy" can still receive the drug, and other antibiotics with similar structures, without any negative reactions to the meds. Why? Because they're not really allergic, doctors say.

News: A Wish List of Windows Mixed Reality Features That Could Change Everything for the HoloLens

"Necessity, not novelty," is a phrase I use often when it comes to HoloLens development. It would be fair to call it my mantra, or mission statement, as I prototype and explore software creation on this new frontier of mixed reality.

News: The Root Cause of Type 1 Diabetes Could Be a Common Childhood Viral Infection

A young child becomes very thirsty very often and seems tired all the time. A visit to the pediatrician determines she has type 1 diabetes. The onset of type 1 diabetes may seem sudden, and it can be, but the disease may actually have been triggered by common childhood viruses years earlier.

How To: Give Your MacBook's Battery a Longer, Healthier Life with These Power Tips

Apple's MacBook line of laptops is quite famous for their extensive battery life, thanks to various technologies that Apple has utilized. However, all things must pass, and over time your MacBook's battery will degrade. Certain use scenarios can accelerate the degradation of the battery—from excessive usage to high temperatures to overloading the system—and this can all lead to the untimely obliteration of your battery.

News: Why YOU Should Study Digital Forensics

As many of you know, I have been running a couple of series here on Null Byte about digital forensics called Digital Forensics for the Aspiring Hacker and Digital Forensics Using Kali. Although many readers have seemed to enjoy these series, just as many seem to be pondering, "Why should I study digital forensics?"

How to Train Your Python: Part 18, Introduction to Bitwise Operators

Welcome back! In our last training session we covered classes and how OOP can make programming/scripting easier. Today we'll be taking a breather and covering something fairly simple, bitwise operators.

How To: Keeping Your Hacking Identity Secret: How to Become a Ghost Hacker #3

I mentioned in one of my earlier articles something about ghost hackers, and very shortly stated a thing or two of what they do.

Hack Like a Pro: How to Hack Like the NSA (Using Quantum Insert)

Welcome back, my greenhorn hackers! Over the years, I have written many articles here on Null Byte chronicling the many the hacks of the NSA, including the recent hack of the Juniper Networks VPN. (By the way, my speculation in that article has proven to be correct. The NSA did embed a backdoor on those devices.)