Victor works as a professional Ethical Hacker for SecureEnet Inc. He has been assigned a job to test an image, in which some secret information is hidden, using Steganography. Victor performs the foll

A Chosen-Stego Attack is a passive analysis technique where the attacker has access to both the stego image and the steganographic tool used, allowing chosen pairs to be analyzed without necessarily modifying the image.

A Stegdetect Attack refers specifically to using the Stegdetect software tool to statistically detect the presence of steganographic content, which is a passive detection method.

A Steg-Only Attack is a passive attack scenario where the analyst has access only to the stego object and must detect hidden content without modifying it or knowing the embedding method.

Active attacks in steganography involve intentionally modifying the stego image through operations such as smoothing, noise reduction, sharpening, rotating, resampling, and softening to either reveal or destroy embedded hidden content. These image processing transformations target the statistical or visual anomalies introduced by steganographic embedding. Victor is actively altering the image rather than passively analyzing it, which is the defining characteristic of an active steganographic attack.