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Exploit Development: How to Read & Write to a Program's Memory Using a Format String Vulnerability

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 their entire program. In this guide, we are going to look at just how we can use a format string to exploit a running program.

NR50: Next Reality's 50 People to Watch in Augmented & Mixed Reality

Throughout this NR50 series, we have talked about the incredible growth the augmented and mixed reality space has seen in the last year. More devices, software, developers, and use-cases seem to arrive daily. For this growth to have occurred, it took the work of many people, from many different backgrounds and skill sets — and Next Reality wants to recognize them for all that they have done and are doing.

How To: Change Your Own Oil — A Beginner's Guide

If you're one who enjoys a good DIY project, or if you're just tired of paying exorbitant labor fees to have your vehicle serviced every 5,000 miles, changing your own oil can be a rewarding endeavor. Even though cars and trucks are becoming increasingly over-engineered these days, manufacturers generally see to it that the basic maintenance items can still be taken care of in your driveway with a few common tools.

Food Hacks Explains: What Makes or Breaks a Perfect Pie Crust (& Why)

Making a good pie crust can seem intimidating to the uninitiated, but once you master this skill, a whole world opens up to you. Not only can you make all manner of fruit, custard, and cream-filled pies once you know all the tricks, you can branch out into the world of quiches, savory pies, and flaky, crispy turnovers, too. We've already told you how to get perfect, firm fruit pie fillings, so now, let's learn about crust.

How To: Introduction to Modern Cryptography

Cryptography is the science of keeping secrets, or more specifically, the science of disguising them. As a point of fact, cryptography has progressed quite a bit farther and now encompasses file and message integrity, sender authentication, and pseudo-random number generators.

How To: The Simplest Way to Remove the Background from Photos on iOS, iPadOS, and Android

It's super easy to add filters, adjust levels, and crop images using the default photo editor on your smartphone, but there's rarely any built-in tool for removing the background in a photo. A third-party app can help isolate people and objects in your pictures, and we've found a free one that's easy to use, works with high-resolution images, and is available for Android, iOS, iPadOS, and the web.

How To: Instantly Share Wi-Fi Passwords from Your iPhone to Other Nearby Apple Devices

Unless you have unlimited cellular data, you probably connect your iPhone to every Wi-Fi network you come across. It could be a local coffee shop, public library, or just a friend's place. Wherever it is, you'll need to ask for the access point's password if it's a secured network, and that can be a hassle if the place is busy or the owner forgets the credentials. Luckily, Apple has a solution for this problem.

How To: The Best Way to Bypass Website Paywalls & Unlock Full Articles on Your iPhone

One of the most aggravating things that can happen on Facebook, Twitter, and other social media apps is when a friend shares an exciting story, and a paywall prevents you from reading any of it. You could pay for a subscription to unlock it, but there are so many news sites that it can be both confusing and expensive to spend money on all of them.

News: Snapchat's Spotlight Confirms That the TikTok, Instagram Social Media War Is On — And AR Is the Next Battlefront

In the realm of social media, all roads lead to one destination: cracking the code of continuous partial attention dopamine hits. We learned this back in the days of Vine, before Twitter foolishly killed it. And I pointed my lens at the emerging trend back in 2016 when I highlighted Musical.ly for Mashable, just before it was snapped up by China's Bytedance for $1 billion and merged into what is now TikTok.

Exploit Development: How to Manipulate Code Execution with the Instruction Pointer

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 vulnerability allows us to flood a variable with enough input to overwrite the instruction pointer with our own commands.

How To: Can't Use Face ID in Landscape Orientation on Your iPhone? Use These 13 Tips to Get It Working Smoothly

The iPhone 13 and iPhone 14 series models have a new feature on iOS 16 that lets you use Face ID when your iPhone is in landscape orientation. This is most helpful when trying to make purchases in apps and games where you use your iPhone rotated on its side. If you're having issues using Face ID in landscape mode, there may be some easy solutions to getting it working.

How To: Keep Your Night Vision Sharp with the iPhone's Hidden Red Screen

Night Shift, Dark Mode, Reduce White Point, and Zoom's Low Light Filter all help reduce the harmful effects on your body's clock that bright iPhone and iPad screens have at night. But there's another option on iOS and iPadOS that turns your entire display red, and it's useful for so much more than just late-night browsing in bed.

How To: These Auto-Redial Apps Can Call Busy Phone Lines Over and Over Again Until You Get Through

Some phone lines make it nearly impossible to get past the busy tone, whether it's a viral call-in giveaway, your state's unemployment office, your local post office during the holidays, or the repair office for a broken warrantied product you have. Thankfully, there are apps you can use to help break through the noise.

How To: Delete the T-Mobile App from Any Android Phone — No Computer Needed

If you buy an Android phone from any of the big US carriers, it will come with several extra apps in addition to any apps the manufacturer preinstalled. It's all in the name of profit, of course. Some of these apps are from companies that paid the carriers to distribute their software, and some are from the carriers themselves, usually aimed at upselling you or perhaps collecting a little data.

How To: With This Free Tool, You Can Preview the Mail Coming to Your Home Every Day

Most packages sent to you via delivery services include a tracking number that allows you to track it from the creation of the shipping label all the way to your doorstep. The U.S. Postal Service includes tracking information with many of its mailing services, but not for first-class mail or periodicals. Luckily, there's a workaround to that limitation that you can set up pretty quickly.

How To: Use Any Song on Your iPhone as a Gradually Increasing Alarm for a Gentle Wakeup

If you'd rather be gently relaxed out of bed instead of stressed out at loud alarm sounds, there are a few things you can do on your iPhone. One of your best options is to use carefully selected songs that start out calm and soothing and gradually increase in intensity and volume. But you could also use a more intense track you know will wake you up, only set to ascend in volume to ease you out of slumber.