How to Hide Steganography in an Image

Steganography is the art of hiding information in plain sight, and in this tutorial, I'll show you how to use Steghide — a very simple command line tool to do just that. In addition, I'll go over a bit of conceptual background to help you understand what's going on behind the ...more

Welcome to part three in a series about steganography, the art of hiding things in plain sight. We are practicing steganography because it can be a useful skill if you don't have access to encryption software, or need a quick solution to make sure the sender and recipient are ...more

This is the first of a multi-part series on steganography techniques. Steganography, the art of hiding things in plain sight, has existed for a long time, and in many forms. When you manipulate the alphabet to have your own cipher and decipher, this is considered steganography ...more

Welcome to part two in a series about steganography, the art of hiding things in plain sight. We are practicing steganography because it can be a useful skill if you don't have access to encryption software, or need a quick solution to make sure the sender and recipient are th ...more

In this how-to we will be sending an email with an image we get from a php script after running some fishy code. What you'll need Apache web server with PHP An image (included bellow) An email Account (I use gmail) Step 1: Setting Up Make a folder called "image.jpg" in your ...more

I was looking around on this site and this article caught my eye. It was about hiding text in ADS or Alternate Data Streams. While this is nothing new in the tech world, it seems that more and more people are looking at ADS for one reason or another. Years ago, I created a si ...more

Whether or not you believe that the government is snooping around in our private emails, texts, and phone calls, it wouldn't hurt to protect ourselves a little better in the digital realm. If you're worried about them (or whoever) eavesdropping on your digital messages, takin ...more

It has been a long while since I last came here to write an article. Graduate school keeps you busy. After I looked over what I had written previously, I decided that I should introduce another fun topic from cryptography. In this case, steganography. In this article, I will ...more

You may be familiar with image-based or audio-based steganography, the art of hiding messages or code inside of pictures, but that's not the only way to conceal secret communications. With zero-width characters, we can use text-based steganography to stash hidden information i ...more

The pictures we upload online are something we tend to think of as self-expression, but these very images can carry code to steal our passwords and data. Profile pictures, avatars, and image galleries are used all over the internet. While all images carry digital picture data ...more

In the previous article, we learned how to set up our VPS, configure our PHP server, and developed an in-depth understanding of how the payload works. With all that taken care of, we can get into disguising our payload to appear as an image and crafting the note in the greetin ...more

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. ...more

A silhouette is an outline of a person or an object, usually dark or having little detail, against a brighter, more well-lit background. For this week's Phone Snap Challenge, we've asked you to capture your own silhouette photo with your cell phone for a chance to win a SuperH ...more

This article is dedicated to sugarcane, because we all want more sugarcane in Minecraft. The best way to generate sugar cane is with an automatic reed farm that uses pistons and redstone. The pistons push the canes into the water canal you'll build, then delivers them to the c ...more

Um, genital anatomy is probably one of them. The image below first turned up on Buzzfeed, leading to shock, awe, and lots of head scratching over who could have possibly come up with such an interesting contribution to the world of fashion... ...and a little digging revealed ...more

Facebook's new Timeline feature has been rolling out gradually since its unveiling in September, but yesterday it finally became available to Facebookers everywhere. It's even available on your mobile device, too. Those who want to upgrade to the radical new profile design can ...more

Everyone's been in the following situation. You're sitting there at a nice bar, chatting up a smoking hot member of the opposite sex when all of a sudden they drop this bomb: "Can you engrave on wood in Photoshop?" The next thing you know, the night spirals into blackness and ...more

Every morning I head on over to my gym to start storying away classes full of people dripping in sweat. This always makes me feel super awkward because it's not exactly the most photogenic time to take a picture, and if it was me, I would probably give that person a dirty look ...more

Some websites block image downloads on their webpages so you can't save them for reuse. That means long-pressing or force-pressing on protected images in Safari on your iPhone will not do anything or will omit the "Save Image" option. Taking a screenshot is the obvious solutio ...more

Spreading your reach to new audiences on Instagram takes time and effort. It's not only about taking unique photos and curating an exciting feed. You should choose the time of day wisely, connect with popular brands, and take advantage of hashtags. Unfortunately, hashtags can ...more

If you have some photos, videos, and documents that you want to keep completely hidden and encrypted on your Android device, Andrognito is the app you need. We showcased this app in the past, but since then, CODEX has rebuilt it from the ground up with new and improved feature ...more

Metadata contained in images and other files can give away a lot more information than the average user might think. By tricking a target into sending a photo containing GPS coordinates and additional information, a hacker can learn where a mark lives or works simply by extrac ...more

Headphones cables, USB cables, and other cords have a nasty habit of getting tangled up in-between uses. These tangles are almost always a result of us just mashing and twisting the cord up for "storage," which ends up taking several minutes to carefully untangle. But if you ...more

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 ...more

Apple gave its Photos app some serious muscle in a new update, and it's time to start flexing. Photos has so much power now that it may finally be time to ditch all your iPhone's other photo and video editing apps. You won't even need any third-party apps to remove background ...more

By default, Slack optimizes the images you upload and send to other users in your workspace. Although optimization lowers the resolution of the image, it does send quicker, which is better if your internet service is poor. However, you may want to send the highest-resolution i ...more

Deleted bank statements and private photos are still within an attacker's grasp, so don't think that emptying your recycling bin is enough to keep your files from coming back to life. It's possible for a hacker to recover compromising files and images from a backdoored compute ...more

As penetration testers, we sometimes need to securely store customer data for prolonged periods. Bruteforce-resistant, vault-like containers can be created with just a few commands to protect ourselves from physical attacks and unintended data disclosures. The subject of cryp ...more

These days, most images we post online or share with others come from our smartphones. Whenever personal data is in them, such as debit card numbers, addresses, phone numbers, passwords, and other sensitive information, it's easy to jump into your iPhone's markup tools to blac ...more

For anyone wanting to keep information private, plain text is a format of the past. Instead, cheap, powerful encryption is widely available, but often not easy enough to use to attract widespread adoption. An exception to this rule is EncryptPad, an easy to use application tha ...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

The "Hidden" album on your iPhone has always had one problem — it was never truly hidden. Since iOS 10, when the feature was introduced in the Photos app, any image or video that you conceal in the private folder could be seen by anyone with access to your unlocked device. Fin ...more

Next time you go to the beach, stash a bottle of baby powder in your beach tote—even if you're not planning on changing any diapers. Before you head back home, dust your hands and feet with baby powder to remove sand particles quickly and easily, so you don't track any into yo ...more

Your iPhone's home screen is a tricky thing. You can sort your collection of apps in any order you'd like, but where you place those apps is a totally different story. App and folder placement follows a strict grid on iOS from left to right, top to bottom. No exceptions, and t ...more

The prospect of loss or theft is something we constantly live with. Stolen iPhones fetch a premium price on the black market for parts like OLED display assemblies, frames, and charging ports. Making matters worse, if someone were to steal your phone, they could simply turn it ...more

WhatsApp is the go-to messaging app for millions worldwide and its easy to see why. The app can be considered the Swiss Army Knife of texting thanks to numerous features like Group Chats and Status Stories, in addition to striking a great balance between ease of access and ove ...more

While the notch on Apple's newer iPhones started a wave of notches across the smartphone market, there are still plenty of users who don't like screen-obstructing zone up top, and you may be one of them. While it may soon disappear in future iPhone models, or at least get smal ...more

The new iPhone XR, XS, and XS Max have everyone buzzing. But, at first glance, the XR and XS look pretty similar in almost every way. So, what's the difference? It comes down to the XR's "Liquid Retina" LCD screen vs. the XS's "Super Retina" OLED display. How do they compare, ...more

The act of liking someone's really old Instagram post is called "deep-liking," which is pretty apt if you think about it. While going "deep" into older posts on the feed of your ex or crush or whoever, your finger may slip accidentally and double-tap on a photo or video that y ...more

Any internet user will need to download files eventually, and most simply have faith that what they are downloading is trustworthy. This doesn't give much clarity into the contents of the file, but if the file's author published the original checksum, comparing it to the SHA-2 ...more

While there are at least five cool things coming in iOS 11.4, they may not be enough to get you to install the iOS 11.4 beta on your iPhone. Since its initial beta release at the start of April, there have been plenty of known issues and user-reported bugs to deal with. While ...more

Combine the word "fake" with the word "Instagram" and you get what's called a "Finsta." If you are concerned about posting pictures on social media that you wouldn't want your family or boss to see, then a finsta account might be the thing that you need. So all those provocat ...more