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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Covert channel definition conflicts regarding steganography
I'm under the impression that stegonographic manipulation of file names or packet timing would qualify as a storage covert channel and a timing covert channel respectively.
I came across this ...
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What steganographic techniques can I use in images that survive lossy compression?
Learning a bit about IT security, a segment of the material was the basics of steganography - specifically, hiding information in the lowest significance bits of images, and converting images into ...
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Hiding text string with steganographic method - practical problem
I'd like to ask for small hint with following problem:
Using the steganographic method of the least significant bits, hide
the text string "Kra" in four pixels of color with RGB code
. Hide ...
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Detecting messages embedded in a jpg image with OutGuess
To begin, please someone correct me if I am wrong, but I believe OutGuess was definitively broken in the paper "Attacking the OutGuess" in 2002 and this attack was never patched. It seems ...
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How is it possible to embed executable code in an image
I was reading up on FireEye and came across this NYTimes article detailing a Skype chat where an image was sent laden with malware:
Quote:
To gain access to information on the devices..., hackers ...
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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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Secrecy of the method in steganography
Is it considered a bad practice to use a secret method to encode data in steganography? We all know that it is a bad practice in cryptography, for at least two reasons:
A public method can be checked ...
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Which would be the best "keyfile" for KeepassXC and/or Veracrypt?
I am a Mac user. I opened a keyfile generated by Veracrypt and one generated by KeepassXC. The texts in both of them were quite short. Which keyfile is best (i.e., most random and harder to break ...
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Is there an encryption algorithm that allows for a single payload to have two different outputs based on the password?
Suppose I have some confidential information that is encrypted and I'm forced/compelled to disclose that password.
My goal is to make that decrypted payload seem meaningful / and the password valid. ...
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Steganographically hide encrypted packets for VPN, Tor, etc?
We all know about different encryption methods used today in secured connections like VPN, Tor, etc.
However, there is an issue with usage of those. Even if the outsider can not decrypt the message, ...
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Real-world application of network steganography
I recently came across a topic of network steganography, mostly connected with modifying the headers of IP, TCP, ICMP. I was looking for some real-world examples of malware that uses it. I only found ...
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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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Do digital cameras perform steganography / watermarking?
It is well documented that one should consider that all modern printers perform steganography / watermarking in the back of their users.
Is such a feature also documented / are there rumors of similar ...
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How to encrypt and hide a GNU/Linux operating system and create a decoy system?
My goal is to be protected against key disclosure laws and possible extortion. I know dm-crypt can be used to perform full disk encryption for GNU/Linux distros. However, it is not enough. I want to ...
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Steganography to hide text within text
Are there any steganography algorithms which are capable of hiding a (optionally encrypted) text message within another innocuous text message?
The scenario I envisage is that I would like to carry on ...
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Are any social media sites sanitizing images?
I'm new to steganography. I have some questions about images on social media sites.
I saw that Facebook recently patched a vulnerability on Instagram, but I was wondering whether any of the major ...
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Steganography CTF question
I have recently participated in a CTF competition and failed in the following stage where the solution was never revealed.
After a really hard job I got access to a text file that contains a really ...
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What can a jpg with a small width and height hide? [duplicate]
I'm new to cybersecurity. I am participating in the cybersec challenge.
I have an image to analyze. This image is small but super heavy. I thought that there was a message hidden behind but all my ...
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How to analyze files for malware using steganography? [duplicate]
There are ways that a file [.jpg, .pdf, .png, etc..] can contain a malware using steganography.
How can a file be analyze in order to verify it doesn't contain any malware?
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How to detect malware in images
Do commercial AV suites examine image files (pictures) for potential malware that might be imbedded via steganography? Is this a concern for most?
I deal with a lot of imagery data and am wondering ...
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Screenshots and steganography, can malicious code in image be copied?
If you have an image that has malicious code written into it using steganography would a screenshot of that image have functional malicious code as well? Or does the recapture transform the image data ...
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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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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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How to determine if JPG EXIF data has been changed by "OEM" software (without third party tools)?
I have a JPG and I am analyzing it to determine it's efficacy. The image metadata clearly indicates that the image was digitized at 15:10:13, Dec 31, 2015 and I need to determine if this date ...
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Steganography and hiding messages
Is it possible to hide strings of text in one picture without coupling the strings in a file? I have only been able to find tools that allow for one.
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Setup a private VPN for family in China?
I have family in China. During the past weeks their internet connection was severely limited. VPNs such as Astrill and similar weren't working anymore.
Is it possible to setup my own VPN (or ...
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Why is this 435 × 652 pixel JPEG over 6 MB?
This was, before someone helpfully fixed it after seeing this question, a relatively unassuming and tiny photo of a ̶f̶i̶s̶h̶ nudibranch, with 283,620 pixels. It has some metadata: text Exif tags as ...
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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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Detecting steganography in images
I recently came across an odd JPEG file: Resolution 400x600 and a filesize of 2.9 MB. I got suspicious and suspected that there is some additional information hidden. I tried some straight forward ...
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Are automated steganalysis tools commonly used in malware analysis?
I want to know whether or not it is useful to a malware researcher or AV product to use steganalysis tools to detect or study malware. If so, is there a standard steganalysis tool that's generally ...
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How can I recover steganographically hidden data from a photographic copy of the image? [closed]
I need to photograph an image containing a steganographically hidden message, then decode the stego content from the photograph without recourse to the original image data. Are there any steganography ...
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How is malicious code executed on android devices without owners' knowledge?
I was wondering how hackers were able to gain remote access to one's android device with the help of just a .PNG file. This vulnerability was announced by Google but they didn't provide much ...
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Is it possible to put malware in an audio file with steganography?
I have recently read malware being hidden in a "usable" picture file with stenography such as this forum,
https://www.bleepingcomputer.com/forums/t/574487/is-it-possible-for-a-virus-to-be-embedded-in-...
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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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Printer Steganography/Watermarking
I am referring to the yellow dots which are printed automatically by laser printers. They encode information such as the time the document is printed as well as the serial number. There appears to be ...
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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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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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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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Defeating identifying information that printers hide in printed documents
It's pretty widely known (well, I think it's widely known) that printer manufacturers, in cooperation with certain governments, embed various bits of information (serial numbers, dates, etc.) in ...
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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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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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Steganography in MP3s
Is there a way to hide a message in an audio file and hear it by playing it in reverse? Like if you play the audio file forward, it will skip my secret message and just play the next frame, but is ...
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How to hide encrypted volume as playable video?
How do I hide an encrypted VeraCrypt volume as a playable video file?
I know I can store the encrypted volume as whatever file type I want, but what if I want that file to act as the file type? For ...
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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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Audio steganography and DRM
I recently made a post about an audio steganography program and had another concern I thought I might ask. I understand that most music has DRM in them. If I hide secret files in audio files with DRM ...
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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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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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Editing images containing hidden information
Suppose we have an image with some hidden info behind it. If we open it in a photo manipulation software like Photoshop or Gimp, without editing it and just save it as a new image, does the image ...
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Is there such a thing as public key steganography
One of the drawbacks of traditional steganography is that both parties need to exchange a secret key. Encryption had this problem too but circumvented this with public key cryptography.
Are there any ...
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Encrypted data embedded in JPG and Other file types
This is some data found near the end of a JPG file:
18{8uck3y3$}
! 18{b4063c521f76545d8c94e999dd63f445d8c01cfc}
# 18{U2FsdGVkX19RJjdBbDB51ok1hkFXaB91NpZNoQjbVXYlMeMTaWRTdg==}?
Other files on the ...
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