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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Hidden message in an image [duplicate]

I have a homework scenario It seems the Spetzners will find any way possible to keep their secrets from us. And we think they know we're on to them, so they're doubling down with strange new ways to ...
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13 views

Alternative to Qtech Hide & View for Linux [closed]

Is there any similar program to Qtech Hide & View (steganography tool) for Linux? Or any other tool that uses a steganography method with similar power to store large amounts of data? Not like F5 ...
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2answers
112 views

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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2answers
42 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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28 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 ...
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1answer
70 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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54 views

Putting hidden DRM into PNG images to track copyright infringement [duplicate]

There was a question like this, but it was about JPG pictures. I have the same one about PNG pictures. I've recently had trouble where someone stole an artwork of mine and put it as a YouTube avatar. ...
4
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1answer
81 views

What tools are needed to view or detect covert messages in a 60 fps video?

The eye can't detect changes in a frame greater than 60 FPS. Similar to this scene in Fight Club, a QR code equivalent is used in pairing the Apple Watch with the iPhone Without knowing that the ...
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2answers
131 views

How can I verifiably demonstrate that steganography or hidden partitions do not exist?

I want to verifiably demonstrate that there are no hidden partitions, or hidden messages in a given message. In this scenario, assume the subject is being monitored (consensually) and agrees to align ...
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2answers
59 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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8answers
3k views

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 ...
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54 views

Rebuilding images from raw traffic [closed]

I've got a tcpflow log file that has the following: HTTP/1.1 200 OK Server: nginx Date: Sat, 20 Jun 2015 02:49:29 GMT Content-Type: image/jpeg Content-Length: 12177 Last-Modified: Wed, 10 Jun 2015 ...
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2answers
248 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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0answers
199 views

jpeg hide & seek - get password hash [closed]

I'm doing some university work related to digital evidence and I came across a .jpg file that has a high probability of containing something hidden with JPHIDE. JPHIDE uses a user defined pass and ...
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2answers
217 views

How can I detect unencrypted self-executing code in JPEG images?

Assuming that I have an infected image containing a self-executing malicious code that targets my image viewer and executes when I open the file. Supposing also that my computer is completely clean ...
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2answers
439 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 ...
4
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3answers
450 views

Image steganography and tracking

We are running an online-press media-library. On this site many brands are uploading images and track press users download and views per image. But some brand now want to add unique code in image so ...
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2answers
1k views

Does this image contain secret data?

I am analysing big, cloud-based application. During analysis I found that one of the biggest files (>3 MB) used in this app is a very small (16x16) icon.png file. Further analysis revealed that the ...
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1answer
82 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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2answers
90 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 ...
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7answers
5k views

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 that was laden with malware: Quote: To gain access to information on the ...
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4answers
338 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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1answer
446 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 ...
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1answer
2k views

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 ...
6
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1answer
315 views

Distinguishing SSH and HTTPS traffic

Alice is an employee of Chris, and Chris does heavy traffic monitoring via its company proxy. Alice wishes to use a Bob's web service while preserving privacy and confidentiality. She has full ...
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4answers
3k views

Would 'spam' mail really avoid eavesdropping?

spammimic.com offers a service that 'encrypts' your mail as 'spam', the rationale being that all mail services automatically filter out spam, and so if you're wanting to communicate with someone ...
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1answer
67 views

Masking traffic in another protocol

I remember reading a couple of years ago (I believe it was during the Egyptian Revolution) that hackers managed to bypass government filters by making their traffic appear as another protocol. If ...
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3answers
1k views

Can you recover original data from a screenshot that has been 'blacked out'?

Is there a threat from screenshots with blacked out info? That is can someone take out that after market addition so to speak? For instance I take a screen shot (using MS snipper) Then I ...
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2answers
186 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 ...
6
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1answer
298 views

What cryptosystem makes the encrypted text look like random noise?

Suppose one wants to setup a cryptographic protocol in which 2 parties communicate using an encryption scheme that produces encrypted messages indistinguishable from random data (the desired property) ...
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2answers
128 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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391 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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1answer
158 views

Unusual image may contain hidden data

I have received an image from a friend. This is the image. is there any way to detect any anomalies in this image. Thanks
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1answer
271 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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1answer
237 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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10answers
3k views

Cryptography that looks like ordinary email

I would like to stay out of the automatic filters in place by security agencies and not be accidentally placed on a no-fly list or such. Say I'm having a political debate with a friend about democracy ...
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6answers
3k views

How can I detect that steganography has been used?

I have seen some of the algorithms which are used to detect if a file is a stego-file or not, but all those algorithms check for specific patterns and are not universal. Maybe there are universal ...
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2answers
139 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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1answer
426 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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2answers
241 views

Steganograpjy or Digital Watermarking [closed]

I would like to use the best algorithm to hide 1024-bits inside an image. What is the best option to implement this? Is it by using Steganoraphy (i.e. LSB) or Digital water marking?
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2answers
89 views

VCS to manipulate returned trees to prevent leaks? [closed]

I am wondering if there is any system that would change source code trees in subtle from version control systems in ways that are hard to discover (i.e. whitespaces at the ends of lines, perhaps even ...
12
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1answer
304 views

A filesystem with chunks hidden all over the internet?

I am wondering if there are any implementations of a filesystem (as in FUSE) that would allow me to host a file in chunks steganographically distributed all over the internet. The way I imagine it, ...
4
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1answer
366 views

Approaching a steganalysis challenge

I am currently doing one of the Honeynet.org challenges, specifically the 13th forensic challenge dealing with steganography. Several PNGs have been provided and participants are to find and extract ...
6
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7answers
885 views

How easy is it to find a password in a huge text file?

Say that my password is PASSWORD1 I have a 10MB jumbled text file. I hide my password in two parts in the text, between > and < so I can find it myself. Then I put the 2 parts together and add the ...
2
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0answers
237 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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1answer
314 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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0answers
21 views

Steganalysis of outgoing traffic [duplicate]

Possible Duplicate: Detecting Steganography in images Is there any commercial traffic monitoring systems that implements steganalysis and could issue a warning upon suspicious file transfer ...
11
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5answers
10k views

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 ...
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3answers
9k 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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1answer
217 views

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 ...