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Questions tagged [steganography]

Steganography is the art of hiding data within other data. Ann sends a message to Bob. With encryption Eve could see the message but not read it. With steganography Eve would not see the message.

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106 views

Can a picturefile with stegano be malware when saved somewhere?

I was reading an article about malware active in ad-banners, limited to systems with IE-browsers with some settings. Millions exposed to malvertising that hid attack code in banner pixels ...
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1answer
288 views

Efficiency of Steganography with Linear Codes

I have read some papers about steganography using perfect linear codes. The aim is sending more hidden message bits with changing less cover message bits. For example using the parity check matrix of [...
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1answer
131 views

LSB replacement and its effect on grayscale histogram

I used this program to embed some text data in grayscale image, then I compared original and stego histograms in Matlab using imhist function. You can see both on them below: Can somebody explain to ...
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0answers
260 views

Utility to hide several encrypted messages in single file [closed]

I am interested, are there existing utilities/projects under way devoted to combining encryption and steganography. I would like to - combine two or more messages, encrypted with separate ...
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3answers
13k views

How do I hide files inside an image without using any steganography tools?

I want to hide files inside a picture. The files may be music or video. Is it technically possible to do this? If so, how? I searched on Google to find methods. Please suggest some methods for ...
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4answers
562 views

Is it possible to use steganography on an analog audio channel?

Is it possible to use steganography using an analog audio channel? I know this can be done using images. My idea is to encode an audio message in way that if listened by an ordinary device (e.g., ...
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2answers
1k views

Malicious self-executing code can only exist in EXIF data in JPEG images?

Let's say we got an infected JPEG image that just by viewing it can automatically execute the malicious code stored inside it. It can do this either by taking advantage of the image viewer's security ...
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1answer
522 views

Steganography using all TCP/UDP ports?

I just had an idea, and usually when I come up with one, it turns out it was already invented, so... Is there some standard that would consist of multiple parties sniffing on all of their TCP/UDP ...
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3answers
224 views

Is this scheme considered to be text/linguistic steganography?

Let say I have the following message: Lets meet in front of the hall at morning. From that I construct this message by applying antonym substitution: Lets meet behind the hall at evening. So "...
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1answer
289 views

How common is steganography in real world applications?

Steganography, the art of hiding information in "plain sight", is often taught in universities, because it seems immediately graspable to students. An image format where only 7 bits per byte are used ...
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2answers
183 views

How to grade / judge / evaluate a steganography approach?

When it comes to evaluating a text steganographic approach, I think we have to consider these things: How unlikely it is for someone to guess that there is a hidden message in the message being sent? ...
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2answers
324 views

Is there an example of a web server that does steganographic watermarking?

You could imagine a web app that serves subtly different versions of a page to each user. For example, it might encode the identity of the user in the images it serves. This would be a per-user ...
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1answer
392 views

Does steganography ensure confidentiality?

Can we say that steganography ensures confidentiality? I think it does not ensure because it is based on the security through obscurity and then it does not respect Kerckhoffs's principles, but the ...
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1answer
246 views

Has anyone actually been hacked by video subtitles?

This morning's news brought this story: Hackers are hiding computer viruses in film subtitles, security experts warn Where they warn that subtitles in videos played on computers could be used to ...
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2answers
93 views

Very fast and efficient way to check that contents of the directory weren't modified

I need a way of determining whether contents of a folder containing some executable stuff have not been modified in any way a moment before I decide to execute the whatever is in it. Check every time ...
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2answers
441 views

Is steganography a part of “cryptography”?

In preparing for a security exam, the prep book I'm reading states: In the field of cryptography, the topic of encryption gets by far the most attention ... ... Other techniques such as ...
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3answers
154 views

What all file types can we hide an archive file inside?

This tutorial explains how you can "hide" an archive file like .zip inside an image file by using the command: copy /b image.jpg + hide.zip output.jpg Doing so allows you to right click output.jpg ...
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1answer
532 views

Fragile digital watermarking algorithms suitable for PDF embedding

I have a PDF file that I want to embed an invisible and fragile digital watermark. What are the suitable algorithms available for this task?
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1answer
125 views

Is there a tool allowing me to store some encrypted data in an image file? [closed]

I've seen - http://stegosploit.info/ - it's adding certain data. I'm not that sophisticated, I just want to have in an image file: file header encrypted data the image does not have to be real (...
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1answer
166 views

Can I use DCT and LSB method for multiple watermarking?

I have an idea of applying DCT on an image and then embed text into the LSB of the coefficient of DCT and transmit the image to B (the receiver). Now, using the same procedure, can B transmit another ...
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1answer
3k views

How to know if there is an audio hidden message in an audio file? Can we hear it? [closed]

How many types for hiding audio in an audio file are there? And would we be able to realize or hear an hidden audio message in a song in all types of steganography?
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1answer
333 views

Steganography concept - How to check my implementation? [closed]

I have written my own software to do Steganography. Basically, I am dividing the message (text) into bits and then hide them into pixels in jpg. After that I am saving the bitmap into .png (because ....
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1answer
681 views

F4 Algorithm for Steganography

Jsteg algorithm is vulnerable to statistical attacks because it influences the DCT histogram of an image perceptibly since it equalizes the number of paris of coefficients. F3 algorithm, instead of ...
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0answers
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Help needed in identifying a string [closed]

I need help in identifying the following string in order to decode it to a piece of meaningful information. h_t_s_/_g_s_._k_l_b_c_m_4_9_a_k_6_f_8_4_8_e_e_r_9_3_9_f_
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How well can we hide an executable (apk/ipa) in an image [duplicate]

Guys the basic idea behind this question is to gather your thoughts on the below scenario: I was listening to a news program and one of the cyber security researchers, actually a very senior guy, was ...
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0answers
2k views

Detecting steganography in JPG, PNG, and BMP

I have a little problem about my research on steganography. For short, I used StegSpy 2.1 to run a test for my stego images. I used 9 JPG images, 9 BMP images, and 9 PNG images. From all of them, ...
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827 views

How to extract watermark from an image [closed]

I have a task to extract watermark itself from a highly complex image. Below there is an example. We have, say this image: Then we have some watermark like this one which is either transparent or ...
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0answers
101 views

Video Steganography Dataset [closed]

Does anybody knows a video data set worth for stenography tests? I searched many many times but I couldn't find sth good. Thanks
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230 views

Risks from network steganography

I happened to learn that there is an actively researched IT-security field named network steganography. Could experts give a short overview of the current state of affairs, especially about the extent ...
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133 views

PGP 'forced entry' decode (steganography?)

This was originally posted by me on stackoverflow but was deemed too generic. It does seem like an impossible thing to do, but: you know when you have your perimeter alarm system you usually get to ...
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743 views

JPEG file SOS marker before SOF

I'm looking over some JPEG files with an assumption that a steganography has been used for trial obfuscation due to the installation of JPHS. I've come across a file where the start of scan marker ...
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0answers
181 views

Is there a way to detect and extract steganographically hidden data from a picture? [duplicate]

Possible Duplicate: Detecting Steganography in images Is there a way to detect and extract hidden data from picture which altered by steganography? For example, If someone tried to spill ...
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3answers
124 views

How to track the usage of image

We are running an image content system where we allow the option to download the image freely by any user. Now I want to do the following things for those images: Track down the usage of the image ...
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1answer
1k views

Suggested Steganography Program?

I would like to try a Steganograghy program - know of one? How 'heavy' can it be: 1- Can I run the plaintext through a SHA-2 hash, THEN.... 2- Encrypt the digest with my private key (Digital ...
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1answer
51 views

Is it possible to retrieve embedded information in a printed image with steganography?

If I print the following noise texture image in which I've embedded some information with steganography, can I retrieve the information back or can I detect the information loss occurred due to ...
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1answer
287 views

Is this an uncommon PNG ending or image steganography? [closed]

I'm reading about image steganography at the moment. I got a test file to experiment with. I noticed a strange code block at the end of the PNG file when I opened it with vim: xref 0 14 0000000000 ...
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2answers
157 views

Are there any obvious flaws in this anonymous-receiver communication method using Twitter?

There might be flaws in the following method for anonymous signal reception that I'm not seeing: Alice doesn't know who Bob is. Bob wants to Alice to notify Bob of a particular outcome without ...
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2answers
83 views

How to steganograph ownership information into members uploaded images?

Considering a social website where members upload images which at times can be very similar - is there a way that images can be 'branded' steganographically with (salted+encrypted) text that ...
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2answers
11k views

How to look for steganography in a picture [closed]

I need to scan this picture for steganography as the meta-data suggest there is some concealment. I'm new to this process and don't know which free tool is the most comprehensive. EDIT: 1. as I ...
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1answer
434 views

Steganography - outguess vs steghide

Looking for some steganography guidance This maybe a noob question, but what is the difference between outguess and steghide? Are all steganography tools alike? Can I make a secret text file image in ...
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1answer
80 views

Which approach provides more authenticity of image ownership: cropping, or reduced resolution?

Even if this particular approach likely provides medium to low assurance, which approach is more trustworthy: Suppose I take a set of photos that I own, and crop all of them after I magnified by 25%....
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2answers
278 views

Embedding hidden data inside files [closed]

I need to embed a unique ID hash string in many types of files, and then verify the hash string inside the files later on remotely. Is there a best practice for doing this?
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1answer
532 views

How does the Deepsound steganography software work, and what are pros and cons of it?

I always been fascinated by steganography. I understand that its purpose alone is to provide security by obscurity. However, combining steganography with encryption can actually make it desirable ...
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1answer
92 views

Is this spin on RSA algorithm possible?

My main purpose of this question is that i do not want the receiver to know how to decrpyt the data which I included in the image using steganography. I wanted to use asymmetric type algorithm and not ...
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3answers
2k views

Looking for some steganography guidance

I am currently trying to figure out a steganography challenge. I was given 3 images, a secret.txt file and a "binary" file. There are no instructions as this was part of another challenge. I am ...
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1answer
198 views

Malware injected into image.ArticleContentSniffing

I came across below article. https://code.google.com/p/doctype-mirror/wiki/ArticleContentSniffing on of the things that brought my attention is To be on the very safe side, it is best to ...
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4answers
2k views

How can steganography be useful in a social networking and sharing website like Facebook or Reddit? [closed]

The point of steganography is to hide useful messages in other messages so that no one suspects the message to contain secrets and tries to crack the message. The catch is that the recipient should ...
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0answers
77 views

Alter an ASCII character without detection?

If it were possible to alter an ASCII character without detection--that could only be "seen" by the intended receiver of a message--it would be ciphertext heaven. Consider Bacon's Bilateral Cipher (...
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634 views

Are there any tools to detect JPEG steganography? [duplicate]

I am looking for tools which can detect JPEG steganography for Windows or Linux. All the projects I found are either so old that they are missing dependencies and there are no precompiled binaries. ...
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1answer
2k views

Steganography - retreive secret text by comparing original and text containing picture

I have two pictures: st_original.png and st_secret_key_container.png . The second picture is the same as the first but contains a secret which is the MD5 checksum of some key I'll need to decrypt a ...