But only if you also keep transmitting junk data over the same mediums. There is plenty of research available for detecting the <i>presence</i> of applied steganography by entropy measurements. [0, 1, lots of others]<p>If you only apply steganography when you have real[tm] communication needs, those transmissions will stand out. So, from information theoretic standpoint you need to ensure that transmission is undetectable from steady-state with no payload.<p>Incidentally this is also one part of Pond&#x27;s threat model. [2]<p>0: <a href="https:&#x2F;&#x2F;ntrl.ntis.gov&#x2F;NTRL&#x2F;dashboard&#x2F;searchResults&#x2F;titleDetail&#x2F;ADA586643.xhtml" rel="nofollow">https:&#x2F;&#x2F;ntrl.ntis.gov&#x2F;NTRL&#x2F;dashboard&#x2F;searchResults&#x2F;titleDeta...</a><p>1: <a href="https:&#x2F;&#x2F;www.blackhat.com&#x2F;docs&#x2F;asia-14&#x2F;materials&#x2F;Ortiz&#x2F;Asia-14-Ortiz-Advanced-JPEG-Steganography-And-Detection.pdf" rel="nofollow">https:&#x2F;&#x2F;www.blackhat.com&#x2F;docs&#x2F;asia-14&#x2F;materials&#x2F;Ortiz&#x2F;Asia-1...</a><p>2: <a href="https:&#x2F;&#x2F;pond.imperialviolet.org&#x2F;" rel="nofollow">https:&#x2F;&#x2F;pond.imperialviolet.org&#x2F;</a>