Steganography – A Hidden Reality Far Beyond What The Eyes Can See

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Steganography is an ancient secret communication technique that consists of hiding messages within other means of communication, such as images, texts, or physical objects. The term "steganography" derives from the Greek words "steganos" (hidden or covered) and "graphein" (to write), reflecting its nature. Its use dates back to antiquity, with historical records that indicate its existence since ancient times. A documented example is the scraping of wax from a wooden tablet to hide a message, allowing only those who knew the method to retrieve it.
During the Middle Ages, steganography was widely employed for military and espionage purposes. The invisible ink technique was especially notable, using special ink that could only be revealed through specific chemicals or heat. This technique was commonly used to convey secret information in letters and documents.
With the advancement of technology, steganography has evolved and found new applications. During World War II, for example, even with the different ways of encoding messages used at the time, the technique was used to hide information within other types of communication, such as images or radio transmissions, making it difficult for the enemy to detect and decipher it.

In the digital age, steganography has become even more relevant. Nowadays, it is often used to hide sensitive or confidential information in media files such as images, videos, and other digital files. This information can range from secret....