help with steg detect and old version of invisible secrets

Hi all, i'm playing a challenge which in which i suppose is involved steganography, i have an image on which if i run stegdetect the following output is returned


# stegdetect puzzle2.jpg
puzzle2.jpg invisible[2042](***)

i suppose it's invisible secrets?

i'm not that much into steganography breaking, but afaik invisible secrets uses AES256 for storing information.

since i have some timestamps related to old stuff (2004) is it possible that older versions were easly breakable? and eventually anyone know how?

thanks in advice.