Tag Archives: Image

Is it possible to revert a steganographic process to retrieve the original image (with the same original bits)?

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For example, using outguess it is possible to hide a secret message inside a .jpg image (LSB method). Is it possible to undo the steganographic process if you have the modified image to obtain the original one? I want to obta… Continue reading Is it possible to revert a steganographic process to retrieve the original image (with the same original bits)?→

Is it possible to revert a steganographic process to retrieve the original image (with the same original bits)?

Posted on by

For example, using outguess it is possible to hide a secret message inside a .jpg image (LSB method). Is it possible to undo the steganographic process if you have the modified image to obtain the original one? I want to obta… Continue reading Is it possible to revert a steganographic process to retrieve the original image (with the same original bits)?→

How to protect icon images that are sold online from being stolen?

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I have been lately browsing material icons from this site.

I started to notice that they don’t have any free plans as such so you will have to buy the icons if you want to download them. But however I am concerned regarding the preview. I just had to inspect element in the browser and found out that there was a dynamically added style to a div element with the following background-image property:

https://d30y9cdsu7xlg0.cloudfront.net/noun-svg/505415.svg?Expires=1492526661&Signature=EctcroYLIkJ1lZhiuXcA2uxrKW2zsC3ycNlPajZuLJw62r9ADMRJkpm8chNYDc0hssTXASy2FdYUL~A9vd8bXE2Sil-Xp2A19WZjcI6nurxp3MUrEgzvhC4ssUmT6~CmHs8UwmMX1MVkYM~TydUOaTuzOnCOqaMTRp~9wBE5iGQ_&Key-Pair-Id=APKAI5ZVHAXN65CHVU2Q

Wow! I got the URL that leads me to the SVG icon! Then Save as > Download > icon.svg.

The above link might be updated later on as you can see parameters like Expires, Signature, 1, pair-Id and stuff. So you will have to go inspect yourself.

Since this can’t be called a vulnerability, I am a bit hesitant to ask how such sites can display a preview without enabling frauds to steal their content.

There should be some way right? Is it impossible?

Continue reading How to protect icon images that are sold online from being stolen?→

File Format Posters

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It’s not uncommon for hackers to have a particular delectation for unusual interior decoration. Maybe it’s a Nixie tube clock, or a vacuum fluorescent display reading out the latest tweets from a favorite chatbot. If this sounds like your living room already, perhaps you’d like some of these file format posters to adorn your walls.

The collection of images includes all kinds of formats — GIF, ZIP and WAV are all represented, but it even gets into some real esoterica — DOLphin format executables are here if you’re a total GameCube fanatic. Each poster breaks down the format into parts, …read more

Continue reading File Format Posters→