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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.

How To: Create a Wireless Spy Camera Using a Raspberry Pi

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 motionEyeOS running on a Raspberry Pi Zero to create a small, concealable Wi-Fi connected spy camera that is both affordable and easily concealed.

How To: Use SpiderFoot for OSINT Gathering

During a penetration test, one of the most important aspects of engaging a target is information gathering. The more information you have coming into an attack, the more likely the attack is to succeed. In this article, I'll be looking at SpiderFoot, a modular cross-platform OSINT (open-source intelligence) gathering tool.

Wish List: 18 Features We'd Like iOS 11 to Embrace on iPhones

WWDC 2017 is right around the corner, where Apple is expected to reveal iOS 11, the newest version of their mobile operating system. There have been many rumors floating around about what iOS 11 will have in store for us, but not all of those features will end up in the final product — and a lot of the features you want won't actually make the cut, either. But that doesn't mean we can't hope for the best.

How To: Use Traffic Analysis to Defeat TOR

As was mentioned by the great OTW last week, TOR, aka The Onion Router, has had its integrity attacked by the NSA. In an attempt to reduce the anonymity granted by the service, the NSA has opened a great many nodes of their own. The purpose is presumably to trace the origin of a communication by compromising some entrance and exit nodes. Once both are compromised, it is much easier to correlate traffic with a particular individual.

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: Attach Almost Any File Type to Notes on Your iPhone or iPad

It's no secret that Apple's Notes app supports attachments such as photos, videos, and web links, as well as other file types like PDFs, word documents, spreadsheets, locations on a map, and audio tracks. While images, videos, and document scans are simple to add on an iPhone or iPad, other file types aren't as easy — at least until you know how.

How To: Apple's Music App for iPhone Just Got a Helluva Lot Better for Everybody with These 20+ New Features

In case you missed it, Apple has added a lot of new features and enhancements to the Music app on your iPhone, changes that benefit both Apple Music subscribers and non-subscribers. Chances are, you haven't seen all the changes yet, especially since many of them weren't released when iOS 17 first came out, but we'll go over them all with you.

How To: Use Health Connect to Sync Your Health and Fitness Data Between Google Fit, MyFitnessPal, and Other Android Apps

Taking a cue from Apple and its Health app for iOS, Google has created a central hub to collect health and fitness data on your Android device. With it, you can share and sync health and fitness data, such as steps, heart rate, water intake, sleep quality, and calories burned, between different apps and devices and use your favorite app to view all the information.

How To: Everything You Need to Know About Your iPhone's Focus Feature — From Creating and Editing Focuses to Automating Them

In iOS 15, Apple unveiled a new feature called Focus, an extension of Do Not Disturb that lets you focus on the one thing that's important at any particular moment. It does so by minimizing distractions from your iPhone and other Apple devices, but there's a lot you should know about setting up and using Focus on your iPhone or iPad before you dig in.

How To: Sync Your iPhone Reminders in iCloud & Other Accounts Across All Your Apple Devices

Apple's iCloud is a fantastic way to ensure that all of your photos, messages, notes, and other important data are backed up and appear on all of your connected devices. However, you may have information like reminders attached to accounts other than iCloud, which won't appear when signing into iCloud on a new device. Here's how to get the full picture of where your reminders are stored.

News: Inside the Future of Smartglasses: Vuzix CEO Paul Travers on What 2021 Holds for AR Wearables

We often discuss the augmented reality efforts coming from the biggest players in Silicon Valley like Google, Facebook, Apple, and others, but one name that keeps coming up when you really begin to dig into the AR space is Vuzix. Since the late '90s, the company has quietly but deliberately worked to build itself into a viable competitor in the enterprise space via its wearable display technology.

How To: Your iPhone Can Detect & Alert You to Sounds Around You in iOS 14, Like Alarms, Knocking, Cats, Crying & More

For those that have deafness or are hard of hearing, the iPhone can be a powerful tool to communicate with others. It works with many hearing aids and Bluetooth headphones, Live Listen makes it easier to hear nearby people and sounds, and the Messages app makes it easy to chat with anyone. But iOS 14 takes it to a new level, one that even users with perfect hearing can benefit from.

How To: See FPS, CPU Load & Other Performance Metrics for Any Game in One UI 3.0

If you're a PC gamer, you know the value of performance metrics. These graphs and charts overlaid on top of a game give you real-time information about how well your system performs. And for the first time, Galaxy users running One UI 3.0 will get access to similar information for mobile games.

How To: Quickly Check if Your iPhone Is Still Covered by Apple's Warranty or AppleCare

Let's say that the screen on your iPhone is showing signs of discoloration, which makes the display annoying to use. You'll need a replacement display or a new iPhone as soon as possible. If you have one of the newer iPhone models, the cost to fix it might be more than your wallet can handle, but a warranty may still cover it, and there are ways to check quickly.

How To: Apps & Websites Send Your Activity to Facebook — Here's How to View, Manage & Delete It

It's pretty much a given at this point that Facebook has a lot of data on us. While you might be conscious of the data you share with Facebook when you post, upload photos, or chat with friends on Messenger, you might not be thinking about all the data it receives from websites and apps you use outside the social media giant. Now, you can actually do something about it.

How To: Program MicroPython NeoPixel Holiday Lights to Animate However You Want

Individually addressable LEDs, also commonly called "NeoPixels" after the popular Adafruit product, are a bright and colorful way to get started with basic Python programming. With an inexpensive ESP8266 or ESP32 microcontroller, it's easy to get started programming your own holiday lighting animations on a string of NeoPixels with beginner-friendly MicroPython!