An organization suspects that a former temporary employee may have used steganography to hide sensitive information within multimedia files for unauthorized extraction. The company has launched an internal steganalysis process to uncover the potential breach. The steganalyst discovered some unusual patterns within a specific image file as part of the investigation. Which steganalysis attack techniques are most likely being applied in this scenario?
A stego-only attack is applied when the steganalyst only has access to the stego-object (the image file with potential hidden information) and no other information such as the original cover medium or the secret message. In this scenario, the organization launched a steganalysis process and discovered unusual patterns within a specific image file, indicating they are analyzing the stego-object directly without any additional information, making a stego-only attack the most suitable technique.
In a stego-only attack, the steganalyst or the attacker does not have access to any information except the stego-medium or stego-object.