Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography comes from the Greek words steganos (στεγανός), meaning "covered, concealed, or protected", and graphein (γράφειν) meaning "writing".
Steganography is often used to protect sensitive data or communication from eavesdroppers. For example, a sender might embed a message in an image by hiding it in the pixels. The message would be hidden from anyone who did not know the technique used to hidden it, but could be extracted by someone who did know how to find it.
There are a variety of steganography techniques that can be used to hide data or communication. Some common techniques include:
• Hiding data in images: This is the most common type of steganography. Data can be hidden in the pixels, color values, or other features of an image.
• Hiding data in audio files: Data can be hidden in the waveforms of an audio file.
• Hiding data in video files: Data can be hidden in the frames of a video file.
• Hiding data in text files: Data can be hidden in the spaces between words or characters in a text file.
• Hiding data in network traffic: Data can
What are the 5 types of steganography?
There are 5 main types of steganography:
1. Text steganography
2. Image steganography
3. Audio steganography
4. Video steganography
5. Network steganography
1. Text steganography hides messages in plain text. The message is often hidden in spaces between words or in other unused areas of the text.
2. Image steganography hides messages in images. The message is often hidden in the pixels of the image or in the color values of the pixels.
3. Audio steganography hides messages in audio files. The message is often hidden in the noise of the audio file or in thesilence between the sounds.
4. Video steganography hides messages in video files. The message is often hidden in the pixels of the video or in the color values of the pixels.
5. Network steganography hides messages in network traffic. The message is often hidden in the headers of the network packets or in the payload of the packets.
What is an example of steganography? Steganography is a technique for concealing a message within another message or within an image. For example, a message could be hidden by replacing the letters in a text with other letters or by hiding a message within an image. Steganography can be used to protect information from being intercepted or to avoid detection by censors.
What is reverse steganography?
Reverse steganography is the art and science of recovering hidden information from cover media. The cover media can be anything that can store digital data, such as an image file, a video file, or even a document file. The hidden information can be anything that can be stored digitally, such as a text message, an image, or a video.
Reverse steganography is often used to recover hidden information from cover media that has been tampered with or damaged. For example, if an image file has been corrupted, reverse steganography can be used to recover the hidden information.
Reverse steganography can also be used to recover hidden information from cover media that has been deleted. For example, if a video file has been deleted, reverse steganography can be used to recover the hidden information.
Reverse steganography is a valuable tool for law enforcement and intelligence agencies, as it can be used to recover hidden information from cover media that has been tampered with or damaged.
Why do we need steganography?
Steganography is the practice of concealing a file, message, image, or video within another file, message, image, or video. The word steganography is of Greek origin and means "covered writing".
The advantage of steganography over cryptography alone is that the intended secret message does not attract attention to itself as an object of scrutiny. Plainly visible encrypted messages—no matter how strong the encryption technique—will arouse suspicion and may in themselves be incriminating in countries where encryption is illegal.
In digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. Media files are ideal for steganographic transmission because they are large and complex, thus providing ample space to hide a message.
For example, a sender might start with an ordinary image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change that would be imperceptible to someone viewing the image.
Digital steganography is sometimes used to embed encrypted messages within computer files. If the file is detected and opened by someone other than the intended recipient, the message will appear to be nothing more than random gibberish.