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.
126
questions
0
votes
1
answer
56
views
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 ...
- 1
4
votes
0
answers
221
views
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 ...
- 41
1
vote
1
answer
103
views
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 ...
- 15.7k
-1
votes
1
answer
193
views
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, ...
- 99
1
vote
0
answers
446
views
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 ...
1
vote
1
answer
198
views
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 ...
- 111
0
votes
0
answers
170
views
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 ...
- 1
1
vote
2
answers
570
views
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 ...
- 11
0
votes
1
answer
612
views
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 ...
0
votes
0
answers
37
views
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 ...
0
votes
0
answers
53
views
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?
- 101
0
votes
1
answer
2k
views
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 ...
- 1
0
votes
2
answers
2k
views
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 ...
- 3
1
vote
0
answers
138
views
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.
- 167
0
votes
1
answer
2k
views
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 ...
- 3
102
votes
4
answers
15k
views
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 ...
- 782
0
votes
1
answer
152
views
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 ...
- 355
3
votes
1
answer
620
views
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 ...
- 193
4
votes
2
answers
2k
views
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 ...
- 183
0
votes
0
answers
228
views
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 ...
0
votes
0
answers
140
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 (...
- 297
0
votes
3
answers
237
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 ...
- 109
3
votes
1
answer
2k
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 ...
user163495
0
votes
1
answer
442
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 ...
1
vote
0
answers
132
views
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_
user190513
0
votes
0
answers
1k
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.
...
- 919
2
votes
1
answer
724
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 ...
- 55
2
votes
1
answer
229
views
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 ...
- 21
1
vote
1
answer
1k
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 ...
- 11
2
votes
1
answer
192
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 (...
- 555
-1
votes
1
answer
463
views
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 ...
user178802
0
votes
1
answer
1k
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 ...
user178695
2
votes
1
answer
859
views
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 ...
- 123
2
votes
1
answer
484
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 ...
user167069
1
vote
0
answers
4k
views
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 ...
- 21
6
votes
1
answer
781
views
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 ...
- 297
1
vote
3
answers
321
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 "...
- 21
0
votes
1
answer
126
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%....
- 50.7k
1
vote
0
answers
3k
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, ...
- 11
1
vote
1
answer
339
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 ...
- 977
3
votes
2
answers
1k
views
Is it possible to revert a steganographic process to reconstruct the original image?
Using, say, outguess, it is possible to hide a secret message inside a JPEG image (LSB method).
Is it possible to undo the steganographic process given the modified image to reconstruct the original ...
- 33
0
votes
1
answer
144
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 ...
- 21
1
vote
1
answer
218
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 ...
- 21
4
votes
1
answer
4k
views
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 ...
- 273
6
votes
2
answers
3k
views
Hidden digital watermark in a website which can survive .jpg screenshots?
I'm trying to embed a secret watermark in a website so that I can link any screenshots to the user who created them. The page looks something like this:
It has a custom background (user can change it ...
2
votes
1
answer
589
views
How to Combine RSA and AES for Steganography Project [closed]
I wanted to have some knowledge about cryptography and steganography so I decided to write a steganography application with using LSB technique and for message encryption I wanted to combine RSA and ...
- 121
2
votes
0
answers
1k
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 ...
- 129
7
votes
3
answers
1k
views
How to implement reset password for a password manager
How could I best implement a reset password functionality for a password manager? I'm currently saving a hashed + salted master password, which is hashed with PBKDF2, and encrypting the passwords with ...
- 131
1
vote
3
answers
484
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 ...
- 11
0
votes
1
answer
366
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 ...
- 23